./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:27,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:27,210 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:34:27,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:27,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:27,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:27,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:27,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:27,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:27,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:27,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:27,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:27,244 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:27,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:27,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:27,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:27,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:27,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:27,248 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:27,249 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:27,249 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:27,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:27,250 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:27,251 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:27,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:27,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:27,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:27,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:27,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:27,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:27,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:27,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:27,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:27,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:27,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:27,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:27,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:27,257 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:27,257 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_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 [2023-11-19 07:34:27,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:27,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:27,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:27,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:27,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:27,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-19 07:34:30,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:30,982 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:30,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-19 07:34:30,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/data/dad82cce0/9d98ddcbfe54432787f804f7de0da2e8/FLAGd0900cb29 [2023-11-19 07:34:31,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/data/dad82cce0/9d98ddcbfe54432787f804f7de0da2e8 [2023-11-19 07:34:31,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:31,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:31,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:31,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:31,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:31,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c16f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31, skipping insertion in model container [2023-11-19 07:34:31,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:31,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:31,264 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:31,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:31,306 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:31,306 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:31,314 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:31,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31 WrapperNode [2023-11-19 07:34:31,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:31,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:31,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:31,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:31,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,353 INFO L138 Inliner]: procedures = 22, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-19 07:34:31,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:31,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:31,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:31,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:31,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:31,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:31,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:31,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:31,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:31,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:31,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:31,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:34:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:34:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:34:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:34:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:34:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:34:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:34:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:31,475 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:34:31,574 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:31,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:31,870 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:31,939 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:31,940 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:34:31,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:31 BoogieIcfgContainer [2023-11-19 07:34:31,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:31,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:31,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:31,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:31,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:31" (1/3) ... [2023-11-19 07:34:31,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd9c6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:31, skipping insertion in model container [2023-11-19 07:34:31,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31" (2/3) ... [2023-11-19 07:34:31,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd9c6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:31, skipping insertion in model container [2023-11-19 07:34:31,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:31" (3/3) ... [2023-11-19 07:34:31,960 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-19 07:34:31,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:31,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:34:31,983 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:32,097 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:34:32,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 255 flow [2023-11-19 07:34:32,196 INFO L124 PetriNetUnfolderBase]: 7/114 cut-off events. [2023-11-19 07:34:32,197 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:32,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-19 07:34:32,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 117 transitions, 255 flow [2023-11-19 07:34:32,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 109 transitions, 236 flow [2023-11-19 07:34:32,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:32,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 109 transitions, 236 flow [2023-11-19 07:34:32,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 109 transitions, 236 flow [2023-11-19 07:34:32,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 236 flow [2023-11-19 07:34:32,303 INFO L124 PetriNetUnfolderBase]: 7/109 cut-off events. [2023-11-19 07:34:32,303 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:32,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-19 07:34:32,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 1326 [2023-11-19 07:34:36,473 INFO L134 LiptonReduction]: Checked pairs total: 2011 [2023-11-19 07:34:36,474 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-11-19 07:34:36,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:36,516 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;@460a74f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:36,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:34:36,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:36,519 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:34:36,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:36,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:36,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:34:36,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:36,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash 464, now seen corresponding path program 1 times [2023-11-19 07:34:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261328228] [2023-11-19 07:34:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261328228] [2023-11-19 07:34:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261328228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:34:36,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160885579] [2023-11-19 07:34:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:34:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:36,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:34:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:34:36,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2023-11-19 07:34:36,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:36,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:36,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2023-11-19 07:34:36,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:36,946 INFO L124 PetriNetUnfolderBase]: 699/1034 cut-off events. [2023-11-19 07:34:36,946 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-19 07:34:36,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 1034 events. 699/1034 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4251 event pairs, 511 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 1712. Up to 999 conditions per place. [2023-11-19 07:34:36,966 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 31 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2023-11-19 07:34:36,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 148 flow [2023-11-19 07:34:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:34:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:34:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 240 transitions. [2023-11-19 07:34:36,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529953917050692 [2023-11-19 07:34:36,990 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 240 transitions. [2023-11-19 07:34:36,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 240 transitions. [2023-11-19 07:34:36,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:36,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 240 transitions. [2023-11-19 07:34:37,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,009 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,012 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 92 flow. Second operand 2 states and 240 transitions. [2023-11-19 07:34:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 148 flow [2023-11-19 07:34:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:34:37,019 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 74 flow [2023-11-19 07:34:37,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-19 07:34:37,027 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-19 07:34:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 74 flow [2023-11-19 07:34:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:37,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:37,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 455531, now seen corresponding path program 1 times [2023-11-19 07:34:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843885166] [2023-11-19 07:34:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843885166] [2023-11-19 07:34:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843885166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:37,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111046455] [2023-11-19 07:34:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:37,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:37,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 217 [2023-11-19 07:34:37,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:37,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 217 [2023-11-19 07:34:37,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:37,637 INFO L124 PetriNetUnfolderBase]: 670/989 cut-off events. [2023-11-19 07:34:37,638 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:37,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 989 events. 670/989 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4031 event pairs, 491 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1964. Up to 954 conditions per place. [2023-11-19 07:34:37,648 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 28 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-11-19 07:34:37,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 128 flow [2023-11-19 07:34:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-11-19 07:34:37,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-11-19 07:34:37,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-11-19 07:34:37,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-11-19 07:34:37,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:37,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-11-19 07:34:37,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,660 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 74 flow. Second operand 3 states and 322 transitions. [2023-11-19 07:34:37,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 128 flow [2023-11-19 07:34:37,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:37,662 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 72 flow [2023-11-19 07:34:37,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-19 07:34:37,663 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-19 07:34:37,664 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 72 flow [2023-11-19 07:34:37,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:37,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:37,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:37,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:37,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash 455533, now seen corresponding path program 1 times [2023-11-19 07:34:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:37,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563881029] [2023-11-19 07:34:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:37,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563881029] [2023-11-19 07:34:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563881029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:37,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:37,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:37,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132741151] [2023-11-19 07:34:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:37,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:37,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:37,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 217 [2023-11-19 07:34:37,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:37,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 217 [2023-11-19 07:34:37,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:37,975 INFO L124 PetriNetUnfolderBase]: 641/944 cut-off events. [2023-11-19 07:34:37,975 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:37,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 944 events. 641/944 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 3783 event pairs, 471 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 1876. Up to 910 conditions per place. [2023-11-19 07:34:37,987 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-19 07:34:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 122 flow [2023-11-19 07:34:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-19 07:34:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685099846390169 [2023-11-19 07:34:37,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-19 07:34:37,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-19 07:34:37,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:37,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-19 07:34:37,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:37,999 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 72 flow. Second operand 3 states and 305 transitions. [2023-11-19 07:34:37,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 122 flow [2023-11-19 07:34:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:38,001 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 69 flow [2023-11-19 07:34:38,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:34:38,003 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2023-11-19 07:34:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 69 flow [2023-11-19 07:34:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:38,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:38,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 437776774, now seen corresponding path program 1 times [2023-11-19 07:34:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568019997] [2023-11-19 07:34:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568019997] [2023-11-19 07:34:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568019997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:38,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314616756] [2023-11-19 07:34:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:38,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:38,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 217 [2023-11-19 07:34:38,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:38,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 217 [2023-11-19 07:34:38,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:38,299 INFO L124 PetriNetUnfolderBase]: 609/893 cut-off events. [2023-11-19 07:34:38,300 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:38,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 893 events. 609/893 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 3559 event pairs, 445 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 1779. Up to 863 conditions per place. [2023-11-19 07:34:38,310 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-11-19 07:34:38,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 115 flow [2023-11-19 07:34:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-11-19 07:34:38,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46543778801843316 [2023-11-19 07:34:38,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-11-19 07:34:38,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-11-19 07:34:38,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:38,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-11-19 07:34:38,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,317 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 69 flow. Second operand 3 states and 303 transitions. [2023-11-19 07:34:38,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 115 flow [2023-11-19 07:34:38,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:38,319 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 66 flow [2023-11-19 07:34:38,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-19 07:34:38,321 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2023-11-19 07:34:38,321 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 66 flow [2023-11-19 07:34:38,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:38,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:38,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:38,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 437776773, now seen corresponding path program 1 times [2023-11-19 07:34:38,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074171221] [2023-11-19 07:34:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074171221] [2023-11-19 07:34:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074171221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587568638] [2023-11-19 07:34:38,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:38,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 217 [2023-11-19 07:34:38,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:38,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 217 [2023-11-19 07:34:38,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:38,574 INFO L124 PetriNetUnfolderBase]: 577/842 cut-off events. [2023-11-19 07:34:38,575 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 842 events. 577/842 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 3314 event pairs, 419 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1682. Up to 816 conditions per place. [2023-11-19 07:34:38,584 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-19 07:34:38,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 108 flow [2023-11-19 07:34:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-11-19 07:34:38,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48540706605222733 [2023-11-19 07:34:38,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-11-19 07:34:38,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-11-19 07:34:38,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:38,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-11-19 07:34:38,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,592 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 66 flow. Second operand 3 states and 316 transitions. [2023-11-19 07:34:38,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 108 flow [2023-11-19 07:34:38,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:38,593 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 63 flow [2023-11-19 07:34:38,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-19 07:34:38,595 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2023-11-19 07:34:38,595 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 63 flow [2023-11-19 07:34:38,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:38,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:38,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash -203303610, now seen corresponding path program 1 times [2023-11-19 07:34:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774269332] [2023-11-19 07:34:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774269332] [2023-11-19 07:34:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774269332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314800190] [2023-11-19 07:34:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:38,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 217 [2023-11-19 07:34:38,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:38,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 217 [2023-11-19 07:34:38,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:38,904 INFO L124 PetriNetUnfolderBase]: 449/666 cut-off events. [2023-11-19 07:34:38,905 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:38,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 666 events. 449/666 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2484 event pairs, 323 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 1331. Up to 640 conditions per place. [2023-11-19 07:34:38,912 INFO L140 encePairwiseOnDemand]: 215/217 looper letters, 21 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-11-19 07:34:38,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 105 flow [2023-11-19 07:34:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-19 07:34:38,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42242703533026116 [2023-11-19 07:34:38,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-19 07:34:38,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-19 07:34:38,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:38,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-19 07:34:38,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,919 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 63 flow. Second operand 3 states and 275 transitions. [2023-11-19 07:34:38,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 105 flow [2023-11-19 07:34:38,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:38,921 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 62 flow [2023-11-19 07:34:38,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-11-19 07:34:38,922 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2023-11-19 07:34:38,922 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 62 flow [2023-11-19 07:34:38,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:38,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:38,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:38,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -203303609, now seen corresponding path program 1 times [2023-11-19 07:34:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:38,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079421517] [2023-11-19 07:34:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079421517] [2023-11-19 07:34:39,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079421517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:39,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888192592] [2023-11-19 07:34:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:39,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 217 [2023-11-19 07:34:39,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:39,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 217 [2023-11-19 07:34:39,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:39,221 INFO L124 PetriNetUnfolderBase]: 321/490 cut-off events. [2023-11-19 07:34:39,221 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:39,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 490 events. 321/490 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1701 event pairs, 227 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 980. Up to 464 conditions per place. [2023-11-19 07:34:39,226 INFO L140 encePairwiseOnDemand]: 215/217 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 07:34:39,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 102 flow [2023-11-19 07:34:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-11-19 07:34:39,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807987711213518 [2023-11-19 07:34:39,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-11-19 07:34:39,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-11-19 07:34:39,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:39,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-11-19 07:34:39,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,233 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 62 flow. Second operand 3 states and 313 transitions. [2023-11-19 07:34:39,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 102 flow [2023-11-19 07:34:39,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:39,234 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 61 flow [2023-11-19 07:34:39,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-19 07:34:39,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2023-11-19 07:34:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 61 flow [2023-11-19 07:34:39,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:39,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:34:39,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash -929925318, now seen corresponding path program 1 times [2023-11-19 07:34:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248673333] [2023-11-19 07:34:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248673333] [2023-11-19 07:34:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248673333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:39,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330900006] [2023-11-19 07:34:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:39,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2023-11-19 07:34:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2023-11-19 07:34:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:39,720 INFO L124 PetriNetUnfolderBase]: 514/760 cut-off events. [2023-11-19 07:34:39,720 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:34:39,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 760 events. 514/760 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2838 event pairs, 95 based on Foata normal form. 1/533 useless extension candidates. Maximal degree in co-relation 1498. Up to 536 conditions per place. [2023-11-19 07:34:39,727 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 34 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2023-11-19 07:34:39,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 180 flow [2023-11-19 07:34:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-11-19 07:34:39,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5360983102918587 [2023-11-19 07:34:39,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-11-19 07:34:39,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-11-19 07:34:39,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:39,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-11-19 07:34:39,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,734 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 61 flow. Second operand 3 states and 349 transitions. [2023-11-19 07:34:39,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 180 flow [2023-11-19 07:34:39,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:39,736 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 86 flow [2023-11-19 07:34:39,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-19 07:34:39,737 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2023-11-19 07:34:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 86 flow [2023-11-19 07:34:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:39,738 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] [2023-11-19 07:34:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:34:39,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1495010373, now seen corresponding path program 1 times [2023-11-19 07:34:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401227651] [2023-11-19 07:34:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:40,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:40,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401227651] [2023-11-19 07:34:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401227651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:40,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81019565] [2023-11-19 07:34:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:40,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-19 07:34:40,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:40,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-19 07:34:40,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:40,508 INFO L124 PetriNetUnfolderBase]: 626/948 cut-off events. [2023-11-19 07:34:40,509 INFO L125 PetriNetUnfolderBase]: For 212/216 co-relation queries the response was YES. [2023-11-19 07:34:40,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 948 events. 626/948 cut-off events. For 212/216 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3847 event pairs, 44 based on Foata normal form. 55/1001 useless extension candidates. Maximal degree in co-relation 2208. Up to 379 conditions per place. [2023-11-19 07:34:40,518 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 75 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2023-11-19 07:34:40,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 455 flow [2023-11-19 07:34:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:34:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:34:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 940 transitions. [2023-11-19 07:34:40,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48131080389144903 [2023-11-19 07:34:40,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 940 transitions. [2023-11-19 07:34:40,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 940 transitions. [2023-11-19 07:34:40,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:40,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 940 transitions. [2023-11-19 07:34:40,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.44444444444444) internal successors, (940), 9 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,533 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 86 flow. Second operand 9 states and 940 transitions. [2023-11-19 07:34:40,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 455 flow [2023-11-19 07:34:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:40,537 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 221 flow [2023-11-19 07:34:40,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-19 07:34:40,538 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-11-19 07:34:40,539 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 221 flow [2023-11-19 07:34:40,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:40,540 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] [2023-11-19 07:34:40,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:34:40,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:40,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:40,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1182373865, now seen corresponding path program 2 times [2023-11-19 07:34:40,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:40,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711097939] [2023-11-19 07:34:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:40,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711097939] [2023-11-19 07:34:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711097939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654632040] [2023-11-19 07:34:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:40,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-11-19 07:34:40,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:40,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-11-19 07:34:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:41,253 INFO L124 PetriNetUnfolderBase]: 1101/1645 cut-off events. [2023-11-19 07:34:41,253 INFO L125 PetriNetUnfolderBase]: For 2360/2380 co-relation queries the response was YES. [2023-11-19 07:34:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 1645 events. 1101/1645 cut-off events. For 2360/2380 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7376 event pairs, 109 based on Foata normal form. 48/1683 useless extension candidates. Maximal degree in co-relation 5316. Up to 643 conditions per place. [2023-11-19 07:34:41,270 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2023-11-19 07:34:41,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 119 transitions, 745 flow [2023-11-19 07:34:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2023-11-19 07:34:41,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029624753127058 [2023-11-19 07:34:41,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2023-11-19 07:34:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2023-11-19 07:34:41,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:41,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2023-11-19 07:34:41,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,282 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 221 flow. Second operand 7 states and 764 transitions. [2023-11-19 07:34:41,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 119 transitions, 745 flow [2023-11-19 07:34:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 119 transitions, 741 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:41,296 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 395 flow [2023-11-19 07:34:41,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-19 07:34:41,297 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-11-19 07:34:41,297 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 395 flow [2023-11-19 07:34:41,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:41,298 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] [2023-11-19 07:34:41,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:41,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:41,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1944070657, now seen corresponding path program 3 times [2023-11-19 07:34:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268049097] [2023-11-19 07:34:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268049097] [2023-11-19 07:34:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268049097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041908891] [2023-11-19 07:34:41,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:34:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:41,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:41,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:34:41,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:41,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:41,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:41,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041908891] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-11-19 07:34:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356961526] [2023-11-19 07:34:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:41,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:41,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-11-19 07:34:41,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:41,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-11-19 07:34:41,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:42,447 INFO L124 PetriNetUnfolderBase]: 1121/1737 cut-off events. [2023-11-19 07:34:42,448 INFO L125 PetriNetUnfolderBase]: For 7698/7782 co-relation queries the response was YES. [2023-11-19 07:34:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7244 conditions, 1737 events. 1121/1737 cut-off events. For 7698/7782 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8206 event pairs, 175 based on Foata normal form. 48/1760 useless extension candidates. Maximal degree in co-relation 7227. Up to 705 conditions per place. [2023-11-19 07:34:42,470 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 67 selfloop transitions, 32 changer transitions 0/101 dead transitions. [2023-11-19 07:34:42,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 834 flow [2023-11-19 07:34:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:34:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 727 transitions. [2023-11-19 07:34:42,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47860434496379195 [2023-11-19 07:34:42,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 727 transitions. [2023-11-19 07:34:42,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 727 transitions. [2023-11-19 07:34:42,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:42,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 727 transitions. [2023-11-19 07:34:42,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:42,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:42,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:42,483 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 395 flow. Second operand 7 states and 727 transitions. [2023-11-19 07:34:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 834 flow [2023-11-19 07:34:42,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 826 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:42,506 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 621 flow [2023-11-19 07:34:42,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-11-19 07:34:42,507 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-11-19 07:34:42,507 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 621 flow [2023-11-19 07:34:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:42,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:42,508 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] [2023-11-19 07:34:42,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:34:42,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:34:42,731 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:42,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1080005827, now seen corresponding path program 1 times [2023-11-19 07:34:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:42,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226481682] [2023-11-19 07:34:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:42,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:43,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226481682] [2023-11-19 07:34:43,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226481682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:43,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:43,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:43,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449935136] [2023-11-19 07:34:43,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:43,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:43,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:43,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-11-19 07:34:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:43,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:43,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-11-19 07:34:43,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:43,703 INFO L124 PetriNetUnfolderBase]: 1498/2374 cut-off events. [2023-11-19 07:34:43,703 INFO L125 PetriNetUnfolderBase]: For 17788/17831 co-relation queries the response was YES. [2023-11-19 07:34:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11327 conditions, 2374 events. 1498/2374 cut-off events. For 17788/17831 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12375 event pairs, 488 based on Foata normal form. 72/2440 useless extension candidates. Maximal degree in co-relation 11305. Up to 1364 conditions per place. [2023-11-19 07:34:43,731 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 81 selfloop transitions, 30 changer transitions 1/113 dead transitions. [2023-11-19 07:34:43,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 1140 flow [2023-11-19 07:34:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2023-11-19 07:34:43,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986175115207373 [2023-11-19 07:34:43,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2023-11-19 07:34:43,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2023-11-19 07:34:43,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:43,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2023-11-19 07:34:43,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:43,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:43,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:43,742 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 621 flow. Second operand 5 states and 541 transitions. [2023-11-19 07:34:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 1140 flow [2023-11-19 07:34:43,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 1094 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:43,787 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 799 flow [2023-11-19 07:34:43,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-19 07:34:43,788 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-11-19 07:34:43,788 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 799 flow [2023-11-19 07:34:43,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:43,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:43,789 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] [2023-11-19 07:34:43,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:34:43,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:43,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash 471637111, now seen corresponding path program 2 times [2023-11-19 07:34:43,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:43,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760726795] [2023-11-19 07:34:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:44,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760726795] [2023-11-19 07:34:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760726795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:44,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181280598] [2023-11-19 07:34:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:44,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:44,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:44,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:44,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:44,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-19 07:34:44,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 799 flow. Second operand has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:44,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-19 07:34:44,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:44,865 INFO L124 PetriNetUnfolderBase]: 1960/3101 cut-off events. [2023-11-19 07:34:44,866 INFO L125 PetriNetUnfolderBase]: For 32846/32846 co-relation queries the response was YES. [2023-11-19 07:34:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 3101 events. 1960/3101 cut-off events. For 32846/32846 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 17455 event pairs, 304 based on Foata normal form. 32/3133 useless extension candidates. Maximal degree in co-relation 16522. Up to 1229 conditions per place. [2023-11-19 07:34:44,908 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 135 selfloop transitions, 76 changer transitions 11/223 dead transitions. [2023-11-19 07:34:44,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 223 transitions, 2953 flow [2023-11-19 07:34:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2023-11-19 07:34:44,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49078341013824883 [2023-11-19 07:34:44,912 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2023-11-19 07:34:44,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2023-11-19 07:34:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2023-11-19 07:34:44,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,919 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,919 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 799 flow. Second operand 6 states and 639 transitions. [2023-11-19 07:34:44,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 223 transitions, 2953 flow [2023-11-19 07:34:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 223 transitions, 2638 flow, removed 100 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:44,984 INFO L231 Difference]: Finished difference. Result has 83 places, 141 transitions, 1956 flow [2023-11-19 07:34:44,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1956, PETRI_PLACES=83, PETRI_TRANSITIONS=141} [2023-11-19 07:34:44,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2023-11-19 07:34:44,986 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 141 transitions, 1956 flow [2023-11-19 07:34:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:44,987 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] [2023-11-19 07:34:44,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:34:44,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:44,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1922372584, now seen corresponding path program 1 times [2023-11-19 07:34:44,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:44,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586019744] [2023-11-19 07:34:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:44,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:45,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586019744] [2023-11-19 07:34:45,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586019744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:45,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:45,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:45,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947938954] [2023-11-19 07:34:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:45,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:45,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:45,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-19 07:34:45,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 141 transitions, 1956 flow. Second operand has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:45,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:45,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-19 07:34:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:46,239 INFO L124 PetriNetUnfolderBase]: 2107/3321 cut-off events. [2023-11-19 07:34:46,239 INFO L125 PetriNetUnfolderBase]: For 29239/29483 co-relation queries the response was YES. [2023-11-19 07:34:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19066 conditions, 3321 events. 2107/3321 cut-off events. For 29239/29483 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 18093 event pairs, 323 based on Foata normal form. 340/3655 useless extension candidates. Maximal degree in co-relation 19038. Up to 2524 conditions per place. [2023-11-19 07:34:46,281 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 169 selfloop transitions, 22 changer transitions 6/200 dead transitions. [2023-11-19 07:34:46,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 200 transitions, 2886 flow [2023-11-19 07:34:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-11-19 07:34:46,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2023-11-19 07:34:46,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-11-19 07:34:46,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-11-19 07:34:46,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:46,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-11-19 07:34:46,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,291 INFO L175 Difference]: Start difference. First operand has 83 places, 141 transitions, 1956 flow. Second operand 5 states and 535 transitions. [2023-11-19 07:34:46,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 200 transitions, 2886 flow [2023-11-19 07:34:46,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 200 transitions, 2886 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:46,383 INFO L231 Difference]: Finished difference. Result has 88 places, 143 transitions, 2035 flow [2023-11-19 07:34:46,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2035, PETRI_PLACES=88, PETRI_TRANSITIONS=143} [2023-11-19 07:34:46,385 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2023-11-19 07:34:46,385 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 143 transitions, 2035 flow [2023-11-19 07:34:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:46,386 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] [2023-11-19 07:34:46,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:34:46,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:46,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -234871673, now seen corresponding path program 3 times [2023-11-19 07:34:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268410268] [2023-11-19 07:34:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:46,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:46,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268410268] [2023-11-19 07:34:46,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268410268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:46,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:46,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:46,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517305256] [2023-11-19 07:34:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:46,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:46,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-19 07:34:46,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 143 transitions, 2035 flow. Second operand has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:46,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-19 07:34:46,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:47,808 INFO L124 PetriNetUnfolderBase]: 2446/3865 cut-off events. [2023-11-19 07:34:47,808 INFO L125 PetriNetUnfolderBase]: For 33364/33400 co-relation queries the response was YES. [2023-11-19 07:34:47,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22326 conditions, 3865 events. 2446/3865 cut-off events. For 33364/33400 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21894 event pairs, 639 based on Foata normal form. 60/3921 useless extension candidates. Maximal degree in co-relation 22296. Up to 2031 conditions per place. [2023-11-19 07:34:47,855 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 106 selfloop transitions, 101 changer transitions 7/215 dead transitions. [2023-11-19 07:34:47,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 215 transitions, 3026 flow [2023-11-19 07:34:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 638 transitions. [2023-11-19 07:34:47,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49001536098310294 [2023-11-19 07:34:47,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 638 transitions. [2023-11-19 07:34:47,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 638 transitions. [2023-11-19 07:34:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 638 transitions. [2023-11-19 07:34:47,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:47,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:47,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:47,866 INFO L175 Difference]: Start difference. First operand has 88 places, 143 transitions, 2035 flow. Second operand 6 states and 638 transitions. [2023-11-19 07:34:47,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 215 transitions, 3026 flow [2023-11-19 07:34:47,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 215 transitions, 2992 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:47,984 INFO L231 Difference]: Finished difference. Result has 94 places, 153 transitions, 2483 flow [2023-11-19 07:34:47,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2483, PETRI_PLACES=94, PETRI_TRANSITIONS=153} [2023-11-19 07:34:47,987 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2023-11-19 07:34:47,987 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 153 transitions, 2483 flow [2023-11-19 07:34:47,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:47,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:47,988 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] [2023-11-19 07:34:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:34:47,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:47,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1077345705, now seen corresponding path program 4 times [2023-11-19 07:34:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996501494] [2023-11-19 07:34:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996501494] [2023-11-19 07:34:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996501494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528812901] [2023-11-19 07:34:48,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:34:48,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:48,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:48,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:48,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:34:48,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:48,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:34:48,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:48,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528812901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:49,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-19 07:34:49,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656203921] [2023-11-19 07:34:49,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:49,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:34:49,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:49,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:34:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:34:49,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 217 [2023-11-19 07:34:49,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 153 transitions, 2483 flow. Second operand has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:49,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:49,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 217 [2023-11-19 07:34:49,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:51,758 INFO L124 PetriNetUnfolderBase]: 4145/6509 cut-off events. [2023-11-19 07:34:51,758 INFO L125 PetriNetUnfolderBase]: For 66840/66868 co-relation queries the response was YES. [2023-11-19 07:34:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41056 conditions, 6509 events. 4145/6509 cut-off events. For 66840/66868 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 39117 event pairs, 205 based on Foata normal form. 112/6621 useless extension candidates. Maximal degree in co-relation 41023. Up to 2017 conditions per place. [2023-11-19 07:34:51,850 INFO L140 encePairwiseOnDemand]: 206/217 looper letters, 195 selfloop transitions, 205 changer transitions 22/423 dead transitions. [2023-11-19 07:34:51,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 423 transitions, 6095 flow [2023-11-19 07:34:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:34:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:34:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1657 transitions. [2023-11-19 07:34:51,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772465437788018 [2023-11-19 07:34:51,859 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1657 transitions. [2023-11-19 07:34:51,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1657 transitions. [2023-11-19 07:34:51,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:51,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1657 transitions. [2023-11-19 07:34:51,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 103.5625) internal successors, (1657), 16 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:51,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:51,876 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:51,876 INFO L175 Difference]: Start difference. First operand has 94 places, 153 transitions, 2483 flow. Second operand 16 states and 1657 transitions. [2023-11-19 07:34:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 423 transitions, 6095 flow [2023-11-19 07:34:52,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 423 transitions, 6081 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:52,205 INFO L231 Difference]: Finished difference. Result has 120 places, 258 transitions, 4978 flow [2023-11-19 07:34:52,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4978, PETRI_PLACES=120, PETRI_TRANSITIONS=258} [2023-11-19 07:34:52,206 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2023-11-19 07:34:52,206 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 258 transitions, 4978 flow [2023-11-19 07:34:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:52,208 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] [2023-11-19 07:34:52,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:52,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:34:52,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:52,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1455358783, now seen corresponding path program 5 times [2023-11-19 07:34:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883327089] [2023-11-19 07:34:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883327089] [2023-11-19 07:34:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883327089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920902333] [2023-11-19 07:34:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:52,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-11-19 07:34:52,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 258 transitions, 4978 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:52,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-11-19 07:34:52,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:54,839 INFO L124 PetriNetUnfolderBase]: 3750/6011 cut-off events. [2023-11-19 07:34:54,839 INFO L125 PetriNetUnfolderBase]: For 103847/103872 co-relation queries the response was YES. [2023-11-19 07:34:54,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46018 conditions, 6011 events. 3750/6011 cut-off events. For 103847/103872 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 35588 event pairs, 688 based on Foata normal form. 269/6280 useless extension candidates. Maximal degree in co-relation 45974. Up to 4313 conditions per place. [2023-11-19 07:34:54,938 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 232 selfloop transitions, 29 changer transitions 14/342 dead transitions. [2023-11-19 07:34:54,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 342 transitions, 6661 flow [2023-11-19 07:34:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-11-19 07:34:54,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49953917050691243 [2023-11-19 07:34:54,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-11-19 07:34:54,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-11-19 07:34:54,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:54,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-11-19 07:34:54,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,948 INFO L175 Difference]: Start difference. First operand has 120 places, 258 transitions, 4978 flow. Second operand 5 states and 542 transitions. [2023-11-19 07:34:54,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 342 transitions, 6661 flow [2023-11-19 07:34:55,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 342 transitions, 6425 flow, removed 75 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:55,326 INFO L231 Difference]: Finished difference. Result has 123 places, 267 transitions, 5011 flow [2023-11-19 07:34:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5011, PETRI_PLACES=123, PETRI_TRANSITIONS=267} [2023-11-19 07:34:55,328 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2023-11-19 07:34:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 267 transitions, 5011 flow [2023-11-19 07:34:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:55,329 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] [2023-11-19 07:34:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:34:55,329 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:55,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1337626429, now seen corresponding path program 6 times [2023-11-19 07:34:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611719335] [2023-11-19 07:34:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:55,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611719335] [2023-11-19 07:34:55,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611719335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:55,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523778569] [2023-11-19 07:34:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:55,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-11-19 07:34:55,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 267 transitions, 5011 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:55,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-11-19 07:34:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:57,716 INFO L124 PetriNetUnfolderBase]: 3693/5909 cut-off events. [2023-11-19 07:34:57,716 INFO L125 PetriNetUnfolderBase]: For 98602/98733 co-relation queries the response was YES. [2023-11-19 07:34:57,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45486 conditions, 5909 events. 3693/5909 cut-off events. For 98602/98733 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 34845 event pairs, 699 based on Foata normal form. 67/5973 useless extension candidates. Maximal degree in co-relation 45440. Up to 5145 conditions per place. [2023-11-19 07:34:57,802 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 206 selfloop transitions, 19 changer transitions 21/313 dead transitions. [2023-11-19 07:34:57,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 313 transitions, 5914 flow [2023-11-19 07:34:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-11-19 07:34:57,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2023-11-19 07:34:57,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-11-19 07:34:57,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-11-19 07:34:57,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:57,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-11-19 07:34:57,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:57,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:57,812 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:57,812 INFO L175 Difference]: Start difference. First operand has 123 places, 267 transitions, 5011 flow. Second operand 5 states and 532 transitions. [2023-11-19 07:34:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 313 transitions, 5914 flow [2023-11-19 07:34:58,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 313 transitions, 5854 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:58,147 INFO L231 Difference]: Finished difference. Result has 128 places, 267 transitions, 5002 flow [2023-11-19 07:34:58,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4951, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5002, PETRI_PLACES=128, PETRI_TRANSITIONS=267} [2023-11-19 07:34:58,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 84 predicate places. [2023-11-19 07:34:58,149 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 267 transitions, 5002 flow [2023-11-19 07:34:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:58,149 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] [2023-11-19 07:34:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:34:58,150 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:34:58,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1495849131, now seen corresponding path program 7 times [2023-11-19 07:34:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336411156] [2023-11-19 07:34:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336411156] [2023-11-19 07:34:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336411156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:58,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282433811] [2023-11-19 07:34:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:58,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:58,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-19 07:34:58,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 267 transitions, 5002 flow. Second operand has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:58,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-19 07:34:58,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:00,491 INFO L124 PetriNetUnfolderBase]: 3746/5945 cut-off events. [2023-11-19 07:35:00,492 INFO L125 PetriNetUnfolderBase]: For 101365/101396 co-relation queries the response was YES. [2023-11-19 07:35:00,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46292 conditions, 5945 events. 3746/5945 cut-off events. For 101365/101396 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 34622 event pairs, 712 based on Foata normal form. 31/5976 useless extension candidates. Maximal degree in co-relation 46244. Up to 5124 conditions per place. [2023-11-19 07:35:00,569 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 214 selfloop transitions, 22 changer transitions 4/307 dead transitions. [2023-11-19 07:35:00,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 307 transitions, 5876 flow [2023-11-19 07:35:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2023-11-19 07:35:00,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823348694316436 [2023-11-19 07:35:00,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 628 transitions. [2023-11-19 07:35:00,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 628 transitions. [2023-11-19 07:35:00,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:00,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 628 transitions. [2023-11-19 07:35:00,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:00,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:00,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:00,591 INFO L175 Difference]: Start difference. First operand has 128 places, 267 transitions, 5002 flow. Second operand 6 states and 628 transitions. [2023-11-19 07:35:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 307 transitions, 5876 flow [2023-11-19 07:35:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 307 transitions, 5706 flow, removed 52 selfloop flow, removed 6 redundant places. [2023-11-19 07:35:00,910 INFO L231 Difference]: Finished difference. Result has 126 places, 262 transitions, 4810 flow [2023-11-19 07:35:00,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4717, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4810, PETRI_PLACES=126, PETRI_TRANSITIONS=262} [2023-11-19 07:35:00,911 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2023-11-19 07:35:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 262 transitions, 4810 flow [2023-11-19 07:35:00,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:00,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:00,912 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] [2023-11-19 07:35:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:35:00,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:35:00,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1670237227, now seen corresponding path program 1 times [2023-11-19 07:35:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014216940] [2023-11-19 07:35:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014216940] [2023-11-19 07:35:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014216940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213115904] [2023-11-19 07:35:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:01,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:01,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:01,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:35:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:01,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:35:01,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:01,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:02,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213115904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:02,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-19 07:35:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416553708] [2023-11-19 07:35:02,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:35:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:35:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:35:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-11-19 07:35:02,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 262 transitions, 4810 flow. Second operand has 12 states, 12 states have (on average 95.25) internal successors, (1143), 12 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:02,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-11-19 07:35:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:05,556 INFO L124 PetriNetUnfolderBase]: 4368/7116 cut-off events. [2023-11-19 07:35:05,556 INFO L125 PetriNetUnfolderBase]: For 124983/125799 co-relation queries the response was YES. [2023-11-19 07:35:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55938 conditions, 7116 events. 4368/7116 cut-off events. For 124983/125799 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45744 event pairs, 213 based on Foata normal form. 517/7583 useless extension candidates. Maximal degree in co-relation 55892. Up to 4158 conditions per place. [2023-11-19 07:35:05,679 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 343 selfloop transitions, 158 changer transitions 6/513 dead transitions. [2023-11-19 07:35:05,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 513 transitions, 9842 flow [2023-11-19 07:35:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:35:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:35:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 922 transitions. [2023-11-19 07:35:05,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720942140296979 [2023-11-19 07:35:05,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 922 transitions. [2023-11-19 07:35:05,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 922 transitions. [2023-11-19 07:35:05,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:05,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 922 transitions. [2023-11-19 07:35:05,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:05,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:05,724 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:05,724 INFO L175 Difference]: Start difference. First operand has 126 places, 262 transitions, 4810 flow. Second operand 9 states and 922 transitions. [2023-11-19 07:35:05,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 513 transitions, 9842 flow [2023-11-19 07:35:06,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 513 transitions, 9589 flow, removed 109 selfloop flow, removed 5 redundant places. [2023-11-19 07:35:06,495 INFO L231 Difference]: Finished difference. Result has 132 places, 356 transitions, 7258 flow [2023-11-19 07:35:06,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7258, PETRI_PLACES=132, PETRI_TRANSITIONS=356} [2023-11-19 07:35:06,496 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 88 predicate places. [2023-11-19 07:35:06,496 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 356 transitions, 7258 flow [2023-11-19 07:35:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 95.25) internal successors, (1143), 12 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:06,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:06,496 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] [2023-11-19 07:35:06,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:06,703 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:35:06,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2139682431, now seen corresponding path program 2 times [2023-11-19 07:35:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:06,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610685678] [2023-11-19 07:35:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610685678] [2023-11-19 07:35:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610685678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118911461] [2023-11-19 07:35:07,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:35:07,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:07,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:07,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7804f8b-0399-414e-a6eb-74a7ab9db735/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:35:07,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:35:07,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:07,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:35:07,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:07,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118911461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:08,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:08,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 14 [2023-11-19 07:35:08,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15046779] [2023-11-19 07:35:08,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:08,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:35:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:35:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:35:09,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 217 [2023-11-19 07:35:09,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 356 transitions, 7258 flow. Second operand has 16 states, 16 states have (on average 92.5) internal successors, (1480), 16 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:09,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:09,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 217 [2023-11-19 07:35:09,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:11,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []