./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl --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 2b11be791089901ed5596869d293da40c27b85c1e89c21a55cf2181db7595687 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:45,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:46,044 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:15:46,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:46,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:46,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:46,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:46,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:46,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:46,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:46,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:46,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:46,082 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:46,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:46,084 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:46,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:46,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:46,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:46,086 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:15:46,086 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:15:46,087 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:15:46,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:46,093 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:15:46,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:15:46,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:46,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:46,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:46,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:46,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:46,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:46,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:46,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:46,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:46,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:46,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:46,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:46,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:46,100 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:46,100 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_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b11be791089901ed5596869d293da40c27b85c1e89c21a55cf2181db7595687 [2023-11-12 02:15:46,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:46,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:46,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:46,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:46,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:46,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:15:49,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:50,247 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:50,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:15:50,275 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/data/d1ccd145b/fcf63e6f204e4e61b0f73fa04d024a72/FLAGb497d52a6 [2023-11-12 02:15:50,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/data/d1ccd145b/fcf63e6f204e4e61b0f73fa04d024a72 [2023-11-12 02:15:50,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:50,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:50,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:50,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:50,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:50,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:50" (1/1) ... [2023-11-12 02:15:50,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b54d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:50, skipping insertion in model container [2023-11-12 02:15:50,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:50" (1/1) ... [2023-11-12 02:15:50,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:51,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:51,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:51,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:51,242 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:51,242 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:51,250 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:51,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51 WrapperNode [2023-11-12 02:15:51,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:51,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:51,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:51,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:51,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,354 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-12 02:15:51,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:51,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:51,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:51,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:51,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:51,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:51,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:51,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:51,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (1/1) ... [2023-11-12 02:15:51,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:51,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:51,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:51,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd90a82-5767-45aa-868a-b17b2f926d8d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:15:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:15:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:15:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:15:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:15:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:15:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:15:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:15:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:15:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:51,558 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:15:51,762 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:51,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:52,386 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:52,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:52,647 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:15:52,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:52 BoogieIcfgContainer [2023-11-12 02:15:52,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:52,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:52,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:52,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:52,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:50" (1/3) ... [2023-11-12 02:15:52,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19b38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:52, skipping insertion in model container [2023-11-12 02:15:52,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:51" (2/3) ... [2023-11-12 02:15:52,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19b38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:52, skipping insertion in model container [2023-11-12 02:15:52,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:52" (3/3) ... [2023-11-12 02:15:52,662 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:15:52,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:52,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-12 02:15:52,691 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:15:52,773 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:15:52,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 127 transitions, 266 flow [2023-11-12 02:15:52,950 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2023-11-12 02:15:52,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:52,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 124 events. 3/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-12 02:15:52,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 127 transitions, 266 flow [2023-11-12 02:15:52,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 124 transitions, 257 flow [2023-11-12 02:15:52,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:15:52,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 124 transitions, 257 flow [2023-11-12 02:15:52,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 124 transitions, 257 flow [2023-11-12 02:15:52,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 124 transitions, 257 flow [2023-11-12 02:15:53,072 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2023-11-12 02:15:53,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:53,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 124 events. 3/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-12 02:15:53,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 2670 [2023-11-12 02:16:01,358 INFO L134 LiptonReduction]: Checked pairs total: 7401 [2023-11-12 02:16:01,359 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-12 02:16:01,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:01,398 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;@3236c115, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:01,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:16:01,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:16:01,401 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:16:01,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:01,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:01,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:16:01,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:01,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash 653, now seen corresponding path program 1 times [2023-11-12 02:16:01,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499975516] [2023-11-12 02:16:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:01,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499975516] [2023-11-12 02:16:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499975516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:16:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926942670] [2023-11-12 02:16:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:01,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:16:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:16:01,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:16:01,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2023-11-12 02:16:01,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:01,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:01,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2023-11-12 02:16:01,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:02,430 INFO L124 PetriNetUnfolderBase]: 2149/3130 cut-off events. [2023-11-12 02:16:02,431 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-12 02:16:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 3130 events. 2149/3130 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14339 event pairs, 2149 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 6320. Up to 3123 conditions per place. [2023-11-12 02:16:02,464 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-12 02:16:02,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 107 flow [2023-11-12 02:16:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:16:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:16:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2023-11-12 02:16:02,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2023-11-12 02:16:02,486 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2023-11-12 02:16:02,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2023-11-12 02:16:02,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:02,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2023-11-12 02:16:02,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,505 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,507 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 2 states and 250 transitions. [2023-11-12 02:16:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 107 flow [2023-11-12 02:16:02,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:16:02,515 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 56 flow [2023-11-12 02:16:02,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-11-12 02:16:02,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-11-12 02:16:02,522 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 56 flow [2023-11-12 02:16:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:02,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:16:02,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:16:02,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:02,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash 617286310, now seen corresponding path program 1 times [2023-11-12 02:16:02,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:02,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577721499] [2023-11-12 02:16:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:02,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:02,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577721499] [2023-11-12 02:16:02,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577721499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:02,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:02,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:16:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589583748] [2023-11-12 02:16:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:02,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:02,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2023-11-12 02:16:02,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:02,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2023-11-12 02:16:02,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:03,649 INFO L124 PetriNetUnfolderBase]: 1683/2656 cut-off events. [2023-11-12 02:16:03,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 2656 events. 1683/2656 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13871 event pairs, 285 based on Foata normal form. 0/2416 useless extension candidates. Maximal degree in co-relation 5182. Up to 1975 conditions per place. [2023-11-12 02:16:03,666 INFO L140 encePairwiseOnDemand]: 257/260 looper letters, 35 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-11-12 02:16:03,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 166 flow [2023-11-12 02:16:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:16:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-12 02:16:03,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705128205128205 [2023-11-12 02:16:03,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-12 02:16:03,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-12 02:16:03,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:03,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-12 02:16:03,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:03,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:03,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:03,689 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 56 flow. Second operand 3 states and 367 transitions. [2023-11-12 02:16:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 166 flow [2023-11-12 02:16:03,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:16:03,691 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 56 flow [2023-11-12 02:16:03,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-12 02:16:03,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -7 predicate places. [2023-11-12 02:16:03,693 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 56 flow [2023-11-12 02:16:03,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:03,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:03,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:03,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:16:03,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:03,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1616434731, now seen corresponding path program 1 times [2023-11-12 02:16:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110424110] [2023-11-12 02:16:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110424110] [2023-11-12 02:16:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110424110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:16:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47147481] [2023-11-12 02:16:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:05,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:16:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:16:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:16:05,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 260 [2023-11-12 02:16:05,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:05,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:05,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 260 [2023-11-12 02:16:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:05,960 INFO L124 PetriNetUnfolderBase]: 1463/2200 cut-off events. [2023-11-12 02:16:05,960 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-11-12 02:16:05,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 2200 events. 1463/2200 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10139 event pairs, 287 based on Foata normal form. 0/2099 useless extension candidates. Maximal degree in co-relation 4639. Up to 1649 conditions per place. [2023-11-12 02:16:05,976 INFO L140 encePairwiseOnDemand]: 249/260 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2023-11-12 02:16:05,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 192 flow [2023-11-12 02:16:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:16:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:16:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 453 transitions. [2023-11-12 02:16:05,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355769230769231 [2023-11-12 02:16:05,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 453 transitions. [2023-11-12 02:16:05,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 453 transitions. [2023-11-12 02:16:05,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:05,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 453 transitions. [2023-11-12 02:16:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.25) internal successors, (453), 4 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) [2023-11-12 02:16:05,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:05,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:05,988 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 56 flow. Second operand 4 states and 453 transitions. [2023-11-12 02:16:05,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 192 flow [2023-11-12 02:16:05,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:16:05,991 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 126 flow [2023-11-12 02:16:05,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-11-12 02:16:05,992 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-11-12 02:16:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 126 flow [2023-11-12 02:16:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:05,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:05,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:16:05,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:05,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1616434754, now seen corresponding path program 1 times [2023-11-12 02:16:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:05,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287946023] [2023-11-12 02:16:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:06,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:06,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287946023] [2023-11-12 02:16:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287946023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:06,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:06,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511247897] [2023-11-12 02:16:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:06,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:06,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:06,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 260 [2023-11-12 02:16:06,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:06,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:06,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 260 [2023-11-12 02:16:06,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:07,124 INFO L124 PetriNetUnfolderBase]: 1118/1698 cut-off events. [2023-11-12 02:16:07,124 INFO L125 PetriNetUnfolderBase]: For 813/816 co-relation queries the response was YES. [2023-11-12 02:16:07,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4611 conditions, 1698 events. 1118/1698 cut-off events. For 813/816 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7723 event pairs, 274 based on Foata normal form. 108/1806 useless extension candidates. Maximal degree in co-relation 4605. Up to 1107 conditions per place. [2023-11-12 02:16:07,140 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 44 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-11-12 02:16:07,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 286 flow [2023-11-12 02:16:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:16:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2023-11-12 02:16:07,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046153846153846 [2023-11-12 02:16:07,144 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2023-11-12 02:16:07,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2023-11-12 02:16:07,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:07,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2023-11-12 02:16:07,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:07,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:07,151 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:07,152 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 126 flow. Second operand 5 states and 526 transitions. [2023-11-12 02:16:07,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 286 flow [2023-11-12 02:16:07,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:16:07,156 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 154 flow [2023-11-12 02:16:07,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-12 02:16:07,157 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-12 02:16:07,157 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 154 flow [2023-11-12 02:16:07,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:07,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:07,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:07,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:16:07,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:07,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 38988674, now seen corresponding path program 1 times [2023-11-12 02:16:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:07,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437810896] [2023-11-12 02:16:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437810896] [2023-11-12 02:16:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437810896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:08,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635268082] [2023-11-12 02:16:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:16:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:16:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:16:09,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 260 [2023-11-12 02:16:09,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 154 flow. Second operand has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:09,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:09,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 260 [2023-11-12 02:16:09,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:10,662 INFO L124 PetriNetUnfolderBase]: 1842/2871 cut-off events. [2023-11-12 02:16:10,662 INFO L125 PetriNetUnfolderBase]: For 1727/1727 co-relation queries the response was YES. [2023-11-12 02:16:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8077 conditions, 2871 events. 1842/2871 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14661 event pairs, 886 based on Foata normal form. 72/2940 useless extension candidates. Maximal degree in co-relation 8067. Up to 1689 conditions per place. [2023-11-12 02:16:10,689 INFO L140 encePairwiseOnDemand]: 253/260 looper letters, 62 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-11-12 02:16:10,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 445 flow [2023-11-12 02:16:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:16:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:16:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 701 transitions. [2023-11-12 02:16:10,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851648351648352 [2023-11-12 02:16:10,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 701 transitions. [2023-11-12 02:16:10,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 701 transitions. [2023-11-12 02:16:10,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:10,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 701 transitions. [2023-11-12 02:16:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.14285714285714) internal successors, (701), 7 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:10,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:10,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:10,702 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 154 flow. Second operand 7 states and 701 transitions. [2023-11-12 02:16:10,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 445 flow [2023-11-12 02:16:10,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:16:10,707 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 224 flow [2023-11-12 02:16:10,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-12 02:16:10,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-12 02:16:10,709 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 224 flow [2023-11-12 02:16:10,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:10,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:10,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:16:10,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:10,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -462176136, now seen corresponding path program 2 times [2023-11-12 02:16:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497767808] [2023-11-12 02:16:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:11,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:11,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497767808] [2023-11-12 02:16:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497767808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:11,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583639193] [2023-11-12 02:16:11,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:16:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:16:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:11,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 260 [2023-11-12 02:16:11,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:11,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:11,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 260 [2023-11-12 02:16:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:12,812 INFO L124 PetriNetUnfolderBase]: 1653/2504 cut-off events. [2023-11-12 02:16:12,813 INFO L125 PetriNetUnfolderBase]: For 2861/2861 co-relation queries the response was YES. [2023-11-12 02:16:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7368 conditions, 2504 events. 1653/2504 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11979 event pairs, 720 based on Foata normal form. 60/2564 useless extension candidates. Maximal degree in co-relation 7354. Up to 2408 conditions per place. [2023-11-12 02:16:12,845 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 40 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2023-11-12 02:16:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 386 flow [2023-11-12 02:16:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:16:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:16:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2023-11-12 02:16:12,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37252747252747254 [2023-11-12 02:16:12,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 678 transitions. [2023-11-12 02:16:12,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 678 transitions. [2023-11-12 02:16:12,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:12,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 678 transitions. [2023-11-12 02:16:12,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:12,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:12,861 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:12,862 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 224 flow. Second operand 7 states and 678 transitions. [2023-11-12 02:16:12,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 386 flow [2023-11-12 02:16:12,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:16:12,873 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 248 flow [2023-11-12 02:16:12,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-12 02:16:12,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-11-12 02:16:12,882 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 248 flow [2023-11-12 02:16:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:12,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:16:12,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:12,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1508519610, now seen corresponding path program 1 times [2023-11-12 02:16:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453115094] [2023-11-12 02:16:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:13,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453115094] [2023-11-12 02:16:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453115094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:13,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506045807] [2023-11-12 02:16:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:13,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:13,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:14,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 260 [2023-11-12 02:16:14,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:14,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:14,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 260 [2023-11-12 02:16:14,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:14,992 INFO L124 PetriNetUnfolderBase]: 2785/4186 cut-off events. [2023-11-12 02:16:14,993 INFO L125 PetriNetUnfolderBase]: For 3450/3450 co-relation queries the response was YES. [2023-11-12 02:16:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11769 conditions, 4186 events. 2785/4186 cut-off events. For 3450/3450 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21473 event pairs, 511 based on Foata normal form. 108/4294 useless extension candidates. Maximal degree in co-relation 11755. Up to 1837 conditions per place. [2023-11-12 02:16:15,027 INFO L140 encePairwiseOnDemand]: 256/260 looper letters, 55 selfloop transitions, 3 changer transitions 7/65 dead transitions. [2023-11-12 02:16:15,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 487 flow [2023-11-12 02:16:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:16:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:16:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-11-12 02:16:15,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43173076923076925 [2023-11-12 02:16:15,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-11-12 02:16:15,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-11-12 02:16:15,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:15,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-11-12 02:16:15,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:15,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:15,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:15,042 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 248 flow. Second operand 4 states and 449 transitions. [2023-11-12 02:16:15,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 487 flow [2023-11-12 02:16:15,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 466 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-12 02:16:15,051 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 245 flow [2023-11-12 02:16:15,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2023-11-12 02:16:15,052 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-11-12 02:16:15,054 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 245 flow [2023-11-12 02:16:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:15,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:15,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:16:15,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:15,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 260936723, now seen corresponding path program 1 times [2023-11-12 02:16:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570081269] [2023-11-12 02:16:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570081269] [2023-11-12 02:16:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570081269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:16:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537302092] [2023-11-12 02:16:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:16:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:16:16,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:16:16,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 260 [2023-11-12 02:16:16,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 106.75) internal successors, (854), 8 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:16,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:16,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 260 [2023-11-12 02:16:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:16,886 INFO L124 PetriNetUnfolderBase]: 1491/2311 cut-off events. [2023-11-12 02:16:16,886 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2023-11-12 02:16:16,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7085 conditions, 2311 events. 1491/2311 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10955 event pairs, 205 based on Foata normal form. 8/2318 useless extension candidates. Maximal degree in co-relation 7069. Up to 1931 conditions per place. [2023-11-12 02:16:16,912 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 54 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2023-11-12 02:16:16,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 559 flow [2023-11-12 02:16:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:16:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 690 transitions. [2023-11-12 02:16:16,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-12 02:16:16,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 690 transitions. [2023-11-12 02:16:16,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 690 transitions. [2023-11-12 02:16:16,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:16,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 690 transitions. [2023-11-12 02:16:16,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:16,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:16,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:16,928 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 245 flow. Second operand 6 states and 690 transitions. [2023-11-12 02:16:16,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 559 flow [2023-11-12 02:16:16,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 538 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:16:16,938 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 376 flow [2023-11-12 02:16:16,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-12 02:16:16,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-12 02:16:16,943 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 376 flow [2023-11-12 02:16:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.75) internal successors, (854), 8 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:16,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:16,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:16,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:16:16,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:16,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1867236215, now seen corresponding path program 2 times [2023-11-12 02:16:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444287491] [2023-11-12 02:16:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444287491] [2023-11-12 02:16:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444287491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:17,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092994816] [2023-11-12 02:16:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:17,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:17,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 260 [2023-11-12 02:16:17,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:17,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:17,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 260 [2023-11-12 02:16:17,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:18,351 INFO L124 PetriNetUnfolderBase]: 1740/2677 cut-off events. [2023-11-12 02:16:18,351 INFO L125 PetriNetUnfolderBase]: For 4508/4508 co-relation queries the response was YES. [2023-11-12 02:16:18,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9351 conditions, 2677 events. 1740/2677 cut-off events. For 4508/4508 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12976 event pairs, 412 based on Foata normal form. 24/2698 useless extension candidates. Maximal degree in co-relation 9336. Up to 2058 conditions per place. [2023-11-12 02:16:18,374 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 52 selfloop transitions, 29 changer transitions 0/82 dead transitions. [2023-11-12 02:16:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 710 flow [2023-11-12 02:16:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:16:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 682 transitions. [2023-11-12 02:16:18,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371794871794872 [2023-11-12 02:16:18,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 682 transitions. [2023-11-12 02:16:18,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 682 transitions. [2023-11-12 02:16:18,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:18,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 682 transitions. [2023-11-12 02:16:18,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:18,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:18,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:18,387 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 376 flow. Second operand 6 states and 682 transitions. [2023-11-12 02:16:18,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 710 flow [2023-11-12 02:16:18,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 674 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-11-12 02:16:18,403 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 539 flow [2023-11-12 02:16:18,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=539, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-12 02:16:18,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-12 02:16:18,404 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 539 flow [2023-11-12 02:16:18,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:18,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:18,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:18,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:16:18,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:18,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash -440365142, now seen corresponding path program 1 times [2023-11-12 02:16:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373400274] [2023-11-12 02:16:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:18,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373400274] [2023-11-12 02:16:18,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373400274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:18,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:18,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249259159] [2023-11-12 02:16:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:16:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:16:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:16:18,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 260 [2023-11-12 02:16:18,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 539 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:18,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:18,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 260 [2023-11-12 02:16:18,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:19,358 INFO L124 PetriNetUnfolderBase]: 1422/2319 cut-off events. [2023-11-12 02:16:19,358 INFO L125 PetriNetUnfolderBase]: For 8293/8296 co-relation queries the response was YES. [2023-11-12 02:16:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9452 conditions, 2319 events. 1422/2319 cut-off events. For 8293/8296 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12073 event pairs, 175 based on Foata normal form. 237/2553 useless extension candidates. Maximal degree in co-relation 9435. Up to 1196 conditions per place. [2023-11-12 02:16:19,377 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 89 selfloop transitions, 4 changer transitions 56/150 dead transitions. [2023-11-12 02:16:19,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 1519 flow [2023-11-12 02:16:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:16:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2023-11-12 02:16:19,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376923076923077 [2023-11-12 02:16:19,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2023-11-12 02:16:19,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2023-11-12 02:16:19,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:19,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2023-11-12 02:16:19,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:19,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:19,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:19,389 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 539 flow. Second operand 5 states and 569 transitions. [2023-11-12 02:16:19,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 1519 flow [2023-11-12 02:16:19,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 150 transitions, 1460 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-11-12 02:16:19,405 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 558 flow [2023-11-12 02:16:19,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-11-12 02:16:19,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-11-12 02:16:19,408 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 558 flow [2023-11-12 02:16:19,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:19,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:19,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:19,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:16:19,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:19,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash 655118012, now seen corresponding path program 1 times [2023-11-12 02:16:19,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917199388] [2023-11-12 02:16:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:19,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:19,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917199388] [2023-11-12 02:16:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917199388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:19,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526858064] [2023-11-12 02:16:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:19,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 260 [2023-11-12 02:16:19,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:19,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:19,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 260 [2023-11-12 02:16:19,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:20,170 INFO L124 PetriNetUnfolderBase]: 738/1298 cut-off events. [2023-11-12 02:16:20,170 INFO L125 PetriNetUnfolderBase]: For 3912/3915 co-relation queries the response was YES. [2023-11-12 02:16:20,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 1298 events. 738/1298 cut-off events. For 3912/3915 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6349 event pairs, 103 based on Foata normal form. 120/1415 useless extension candidates. Maximal degree in co-relation 5871. Up to 532 conditions per place. [2023-11-12 02:16:20,181 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 101 selfloop transitions, 7 changer transitions 34/143 dead transitions. [2023-11-12 02:16:20,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1420 flow [2023-11-12 02:16:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:16:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 682 transitions. [2023-11-12 02:16:20,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371794871794872 [2023-11-12 02:16:20,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 682 transitions. [2023-11-12 02:16:20,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 682 transitions. [2023-11-12 02:16:20,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:20,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 682 transitions. [2023-11-12 02:16:20,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,192 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,192 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 558 flow. Second operand 6 states and 682 transitions. [2023-11-12 02:16:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1420 flow [2023-11-12 02:16:20,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 143 transitions, 1414 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:16:20,204 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 608 flow [2023-11-12 02:16:20,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-12 02:16:20,205 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-11-12 02:16:20,206 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 608 flow [2023-11-12 02:16:20,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:20,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:16:20,207 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:20,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 167414946, now seen corresponding path program 1 times [2023-11-12 02:16:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233939899] [2023-11-12 02:16:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233939899] [2023-11-12 02:16:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233939899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:20,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141778338] [2023-11-12 02:16:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:20,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:20,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 260 [2023-11-12 02:16:20,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 608 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:20,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 260 [2023-11-12 02:16:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:20,851 INFO L124 PetriNetUnfolderBase]: 514/918 cut-off events. [2023-11-12 02:16:20,851 INFO L125 PetriNetUnfolderBase]: For 3217/3220 co-relation queries the response was YES. [2023-11-12 02:16:20,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 918 events. 514/918 cut-off events. For 3217/3220 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4283 event pairs, 97 based on Foata normal form. 26/941 useless extension candidates. Maximal degree in co-relation 4427. Up to 438 conditions per place. [2023-11-12 02:16:20,860 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 98 selfloop transitions, 10 changer transitions 14/123 dead transitions. [2023-11-12 02:16:20,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 123 transitions, 1273 flow [2023-11-12 02:16:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:16:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:16:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 771 transitions. [2023-11-12 02:16:20,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236263736263736 [2023-11-12 02:16:20,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 771 transitions. [2023-11-12 02:16:20,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 771 transitions. [2023-11-12 02:16:20,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:20,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 771 transitions. [2023-11-12 02:16:20,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,873 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 608 flow. Second operand 7 states and 771 transitions. [2023-11-12 02:16:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 123 transitions, 1273 flow [2023-11-12 02:16:20,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 123 transitions, 1213 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-12 02:16:20,889 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 593 flow [2023-11-12 02:16:20,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=593, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-11-12 02:16:20,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-11-12 02:16:20,890 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 593 flow [2023-11-12 02:16:20,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:20,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:20,891 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] [2023-11-12 02:16:20,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:16:20,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:20,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1345639908, now seen corresponding path program 1 times [2023-11-12 02:16:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237592171] [2023-11-12 02:16:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:22,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:22,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237592171] [2023-11-12 02:16:22,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237592171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:22,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726092846] [2023-11-12 02:16:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:16:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:16:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:16:23,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 260 [2023-11-12 02:16:23,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 105.33333333333333) internal successors, (948), 9 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:23,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:23,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 260 [2023-11-12 02:16:23,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:23,985 INFO L124 PetriNetUnfolderBase]: 673/1242 cut-off events. [2023-11-12 02:16:23,985 INFO L125 PetriNetUnfolderBase]: For 3720/3723 co-relation queries the response was YES. [2023-11-12 02:16:23,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 1242 events. 673/1242 cut-off events. For 3720/3723 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6382 event pairs, 65 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 5841. Up to 517 conditions per place. [2023-11-12 02:16:23,995 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 97 selfloop transitions, 35 changer transitions 31/164 dead transitions. [2023-11-12 02:16:23,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 164 transitions, 1592 flow [2023-11-12 02:16:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:16:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:16:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1227 transitions. [2023-11-12 02:16:24,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429020979020979 [2023-11-12 02:16:24,002 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1227 transitions. [2023-11-12 02:16:24,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1227 transitions. [2023-11-12 02:16:24,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:24,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1227 transitions. [2023-11-12 02:16:24,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.54545454545455) internal successors, (1227), 11 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:24,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:24,014 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:24,014 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 593 flow. Second operand 11 states and 1227 transitions. [2023-11-12 02:16:24,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 164 transitions, 1592 flow [2023-11-12 02:16:24,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1428 flow, removed 48 selfloop flow, removed 6 redundant places. [2023-11-12 02:16:24,031 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 775 flow [2023-11-12 02:16:24,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=775, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-11-12 02:16:24,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2023-11-12 02:16:24,032 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 775 flow [2023-11-12 02:16:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.33333333333333) internal successors, (948), 9 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:24,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:24,033 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] [2023-11-12 02:16:24,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:16:24,034 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:24,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1210304866, now seen corresponding path program 2 times [2023-11-12 02:16:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:24,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44647543] [2023-11-12 02:16:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44647543] [2023-11-12 02:16:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44647543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:25,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402568109] [2023-11-12 02:16:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:25,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:16:25,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:16:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:16:25,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 260 [2023-11-12 02:16:25,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 775 flow. Second operand has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:25,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:25,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 260 [2023-11-12 02:16:25,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:26,188 INFO L124 PetriNetUnfolderBase]: 768/1412 cut-off events. [2023-11-12 02:16:26,189 INFO L125 PetriNetUnfolderBase]: For 6528/6531 co-relation queries the response was YES. [2023-11-12 02:16:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 1412 events. 768/1412 cut-off events. For 6528/6531 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7531 event pairs, 107 based on Foata normal form. 4/1415 useless extension candidates. Maximal degree in co-relation 7271. Up to 625 conditions per place. [2023-11-12 02:16:26,200 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 67 selfloop transitions, 25 changer transitions 49/142 dead transitions. [2023-11-12 02:16:26,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 1525 flow [2023-11-12 02:16:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:16:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:16:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 887 transitions. [2023-11-12 02:16:26,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264423076923077 [2023-11-12 02:16:26,205 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 887 transitions. [2023-11-12 02:16:26,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 887 transitions. [2023-11-12 02:16:26,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:26,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 887 transitions. [2023-11-12 02:16:26,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.875) internal successors, (887), 8 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:26,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:26,214 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:26,214 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 775 flow. Second operand 8 states and 887 transitions. [2023-11-12 02:16:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 1525 flow [2023-11-12 02:16:26,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1482 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-12 02:16:26,244 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 832 flow [2023-11-12 02:16:26,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2023-11-12 02:16:26,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2023-11-12 02:16:26,246 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 832 flow [2023-11-12 02:16:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:26,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:26,247 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] [2023-11-12 02:16:26,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:16:26,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:26,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2105061920, now seen corresponding path program 3 times [2023-11-12 02:16:26,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:26,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12759391] [2023-11-12 02:16:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:26,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:26,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:26,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12759391] [2023-11-12 02:16:26,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12759391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:26,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:26,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:26,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614116832] [2023-11-12 02:16:26,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:26,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:26,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:26,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 260 [2023-11-12 02:16:26,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:26,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:26,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 260 [2023-11-12 02:16:26,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:27,222 INFO L124 PetriNetUnfolderBase]: 557/1047 cut-off events. [2023-11-12 02:16:27,222 INFO L125 PetriNetUnfolderBase]: For 5439/5442 co-relation queries the response was YES. [2023-11-12 02:16:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 1047 events. 557/1047 cut-off events. For 5439/5442 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5301 event pairs, 65 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 5611. Up to 428 conditions per place. [2023-11-12 02:16:27,233 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 73 selfloop transitions, 32 changer transitions 15/121 dead transitions. [2023-11-12 02:16:27,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 1353 flow [2023-11-12 02:16:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:16:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:16:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2023-11-12 02:16:27,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322115384615385 [2023-11-12 02:16:27,238 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 899 transitions. [2023-11-12 02:16:27,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 899 transitions. [2023-11-12 02:16:27,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:27,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 899 transitions. [2023-11-12 02:16:27,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.375) internal successors, (899), 8 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:27,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:27,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:27,247 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 832 flow. Second operand 8 states and 899 transitions. [2023-11-12 02:16:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 1353 flow [2023-11-12 02:16:27,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 1264 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-11-12 02:16:27,277 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 885 flow [2023-11-12 02:16:27,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=885, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-12 02:16:27,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2023-11-12 02:16:27,278 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 885 flow [2023-11-12 02:16:27,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:27,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:27,279 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] [2023-11-12 02:16:27,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:16:27,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:27,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 176041180, now seen corresponding path program 4 times [2023-11-12 02:16:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115372169] [2023-11-12 02:16:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115372169] [2023-11-12 02:16:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115372169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:28,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:28,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288910071] [2023-11-12 02:16:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:16:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:16:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:28,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 260 [2023-11-12 02:16:28,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 885 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:28,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:28,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 260 [2023-11-12 02:16:28,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:29,214 INFO L124 PetriNetUnfolderBase]: 540/1019 cut-off events. [2023-11-12 02:16:29,214 INFO L125 PetriNetUnfolderBase]: For 5768/5771 co-relation queries the response was YES. [2023-11-12 02:16:29,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 1019 events. 540/1019 cut-off events. For 5768/5771 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5194 event pairs, 123 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 5491. Up to 770 conditions per place. [2023-11-12 02:16:29,223 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 67 selfloop transitions, 24 changer transitions 19/111 dead transitions. [2023-11-12 02:16:29,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 1317 flow [2023-11-12 02:16:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:16:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 685 transitions. [2023-11-12 02:16:29,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2023-11-12 02:16:29,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 685 transitions. [2023-11-12 02:16:29,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 685 transitions. [2023-11-12 02:16:29,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:29,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 685 transitions. [2023-11-12 02:16:29,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:29,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:29,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:29,235 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 885 flow. Second operand 6 states and 685 transitions. [2023-11-12 02:16:29,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 1317 flow [2023-11-12 02:16:29,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 1246 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-12 02:16:29,257 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 855 flow [2023-11-12 02:16:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-11-12 02:16:29,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2023-11-12 02:16:29,258 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 855 flow [2023-11-12 02:16:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:29,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:29,259 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] [2023-11-12 02:16:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:16:29,259 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:16:29,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -909346834, now seen corresponding path program 5 times [2023-11-12 02:16:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:29,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502919814] [2023-11-12 02:16:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:30,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502919814] [2023-11-12 02:16:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502919814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928004150] [2023-11-12 02:16:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:16:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:16:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72