./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/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_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/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_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/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 bd5019d3aed54929cd262296b7eb8866c696444f31311cf49176222c13f665a6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:59,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:59,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:47:59,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:59,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:59,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:59,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:59,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:59,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:59,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:59,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:59,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:59,610 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:59,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:59,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:59,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:59,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:59,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:59,615 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:59,615 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:59,616 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:59,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:59,617 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:59,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:59,618 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:59,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:59,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:59,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:59,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:59,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:59,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:59,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:59,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:59,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:59,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:59,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:59,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:59,626 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:59,626 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_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5019d3aed54929cd262296b7eb8866c696444f31311cf49176222c13f665a6 [2023-11-19 07:47:59,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:59,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:59,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:59,969 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:59,970 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:59,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:48:03,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:03,593 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:03,593 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/sv-benchmarks/c/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:48:03,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/data/a2b556ec3/bd8482e4a7524eacb9873511ab878f1c/FLAG5740a7a71 [2023-11-19 07:48:03,632 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/data/a2b556ec3/bd8482e4a7524eacb9873511ab878f1c [2023-11-19 07:48:03,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:03,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:03,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:03,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:03,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:03,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc270c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:03, skipping insertion in model container [2023-11-19 07:48:03,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:03" (1/1) ... [2023-11-19 07:48:03,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:04,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:04,370 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:04,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:04,537 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:04,538 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:04,548 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:04,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04 WrapperNode [2023-11-19 07:48:04,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:04,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:04,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:04,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:04,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,645 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2023-11-19 07:48:04,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:04,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:04,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:04,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:04,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:04,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:04,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:04,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:04,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (1/1) ... [2023-11-19 07:48:04,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:04,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:04,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:04,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45734ae-785d-4803-bc3e-f6ef0bc9ea37/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:48:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:48:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:48:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:48:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:48:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:48:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:04,839 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 07:48:05,136 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:05,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:05,630 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:05,847 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:05,848 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:05,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:05 BoogieIcfgContainer [2023-11-19 07:48:05,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:05,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:05,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:05,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:05,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:03" (1/3) ... [2023-11-19 07:48:05,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f80c5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:05, skipping insertion in model container [2023-11-19 07:48:05,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:04" (2/3) ... [2023-11-19 07:48:05,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f80c5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:05, skipping insertion in model container [2023-11-19 07:48:05,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:05" (3/3) ... [2023-11-19 07:48:05,867 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:48:05,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:05,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 07:48:05,892 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:05,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:48:06,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 125 transitions, 262 flow [2023-11-19 07:48:06,084 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-11-19 07:48:06,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:06,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 4/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-19 07:48:06,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 125 transitions, 262 flow [2023-11-19 07:48:06,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 122 transitions, 253 flow [2023-11-19 07:48:06,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:06,123 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 122 transitions, 253 flow [2023-11-19 07:48:06,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 122 transitions, 253 flow [2023-11-19 07:48:06,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 122 transitions, 253 flow [2023-11-19 07:48:06,215 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-11-19 07:48:06,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:06,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 4/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-19 07:48:06,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 2686 [2023-11-19 07:48:12,143 INFO L134 LiptonReduction]: Checked pairs total: 6717 [2023-11-19 07:48:12,144 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-19 07:48:12,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:12,169 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;@2d2738d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:12,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:48:12,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:12,172 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:48:12,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:12,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:12,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:48:12,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:12,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 563, now seen corresponding path program 1 times [2023-11-19 07:48:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83466288] [2023-11-19 07:48:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:12,368 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 07:48:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83466288] [2023-11-19 07:48:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83466288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:12,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:12,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:48:12,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241636234] [2023-11-19 07:48:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:12,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 247 [2023-11-19 07:48:12,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:12,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 247 [2023-11-19 07:48:12,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:13,110 INFO L124 PetriNetUnfolderBase]: 1463/2209 cut-off events. [2023-11-19 07:48:13,111 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 07:48:13,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 2209 events. 1463/2209 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10820 event pairs, 1463 based on Foata normal form. 80/1891 useless extension candidates. Maximal degree in co-relation 4409. Up to 2155 conditions per place. [2023-11-19 07:48:13,139 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 07:48:13,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 107 flow [2023-11-19 07:48:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:48:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2023-11-19 07:48:13,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060728744939271 [2023-11-19 07:48:13,169 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2023-11-19 07:48:13,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2023-11-19 07:48:13,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:13,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2023-11-19 07:48:13,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:13,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:48:13,191 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:48:13,193 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 75 flow. Second operand 2 states and 250 transitions. [2023-11-19 07:48:13,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 107 flow [2023-11-19 07:48:13,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:13,201 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 58 flow [2023-11-19 07:48:13,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-19 07:48:13,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-11-19 07:48:13,211 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 58 flow [2023-11-19 07:48:13,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:13,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:13,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:13,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 552213, now seen corresponding path program 1 times [2023-11-19 07:48:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372061874] [2023-11-19 07:48:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:13,626 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 07:48:13,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372061874] [2023-11-19 07:48:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372061874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780484443] [2023-11-19 07:48:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:13,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 247 [2023-11-19 07:48:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 07:48:13,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:13,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 247 [2023-11-19 07:48:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:14,100 INFO L124 PetriNetUnfolderBase]: 1143/1845 cut-off events. [2023-11-19 07:48:14,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:14,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1845 events. 1143/1845 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10219 event pairs, 183 based on Foata normal form. 0/1649 useless extension candidates. Maximal degree in co-relation 3583. Up to 1375 conditions per place. [2023-11-19 07:48:14,118 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 33 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2023-11-19 07:48:14,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 172 flow [2023-11-19 07:48:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-19 07:48:14,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49527665317139 [2023-11-19 07:48:14,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-19 07:48:14,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-19 07:48:14,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:14,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-19 07:48:14,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:14,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 07:48:14,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 07:48:14,142 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 58 flow. Second operand 3 states and 367 transitions. [2023-11-19 07:48:14,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 172 flow [2023-11-19 07:48:14,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:14,150 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 56 flow [2023-11-19 07:48:14,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-19 07:48:14,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-11-19 07:48:14,152 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 56 flow [2023-11-19 07:48:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 07:48:14,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:14,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:14,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:14,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1342887071, now seen corresponding path program 1 times [2023-11-19 07:48:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:14,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508427348] [2023-11-19 07:48:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:14,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:15,647 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 07:48:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508427348] [2023-11-19 07:48:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508427348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662023053] [2023-11-19 07:48:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:15,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:15,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 247 [2023-11-19 07:48:15,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 07:48:15,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:15,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 247 [2023-11-19 07:48:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:16,823 INFO L124 PetriNetUnfolderBase]: 2162/3172 cut-off events. [2023-11-19 07:48:16,823 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-19 07:48:16,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3172 events. 2162/3172 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15508 event pairs, 253 based on Foata normal form. 0/3046 useless extension candidates. Maximal degree in co-relation 6570. Up to 2150 conditions per place. [2023-11-19 07:48:16,857 INFO L140 encePairwiseOnDemand]: 234/247 looper letters, 59 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2023-11-19 07:48:16,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 87 transitions, 374 flow [2023-11-19 07:48:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 775 transitions. [2023-11-19 07:48:16,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448235974551764 [2023-11-19 07:48:16,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 775 transitions. [2023-11-19 07:48:16,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 775 transitions. [2023-11-19 07:48:16,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:16,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 775 transitions. [2023-11-19 07:48:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 07:48:16,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:16,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:16,875 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 56 flow. Second operand 7 states and 775 transitions. [2023-11-19 07:48:16,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 87 transitions, 374 flow [2023-11-19 07:48:16,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 87 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:16,879 INFO L231 Difference]: Finished difference. Result has 42 places, 52 transitions, 259 flow [2023-11-19 07:48:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=42, PETRI_TRANSITIONS=52} [2023-11-19 07:48:16,880 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-19 07:48:16,881 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 52 transitions, 259 flow [2023-11-19 07:48:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 07:48:16,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:16,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:16,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:16,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:16,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1342887095, now seen corresponding path program 1 times [2023-11-19 07:48:16,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:16,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34619969] [2023-11-19 07:48:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:17,544 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 07:48:17,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34619969] [2023-11-19 07:48:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34619969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:17,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:17,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361746014] [2023-11-19 07:48:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:17,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 247 [2023-11-19 07:48:17,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 52 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 07:48:17,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:17,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 247 [2023-11-19 07:48:17,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,456 INFO L124 PetriNetUnfolderBase]: 1507/2313 cut-off events. [2023-11-19 07:48:18,456 INFO L125 PetriNetUnfolderBase]: For 3207/3424 co-relation queries the response was YES. [2023-11-19 07:48:18,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7644 conditions, 2313 events. 1507/2313 cut-off events. For 3207/3424 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11784 event pairs, 477 based on Foata normal form. 366/2655 useless extension candidates. Maximal degree in co-relation 7636. Up to 2057 conditions per place. [2023-11-19 07:48:18,488 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 41 selfloop transitions, 3 changer transitions 10/61 dead transitions. [2023-11-19 07:48:18,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 405 flow [2023-11-19 07:48:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 499 transitions. [2023-11-19 07:48:18,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040485829959514 [2023-11-19 07:48:18,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 499 transitions. [2023-11-19 07:48:18,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 499 transitions. [2023-11-19 07:48:18,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 499 transitions. [2023-11-19 07:48:18,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 07:48:18,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:18,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:18,503 INFO L175 Difference]: Start difference. First operand has 42 places, 52 transitions, 259 flow. Second operand 5 states and 499 transitions. [2023-11-19 07:48:18,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 405 flow [2023-11-19 07:48:18,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 405 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:18,514 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 184 flow [2023-11-19 07:48:18,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-19 07:48:18,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-19 07:48:18,516 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 184 flow [2023-11-19 07:48:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 07:48:18,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:18,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:18,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1539577064, now seen corresponding path program 1 times [2023-11-19 07:48:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203383354] [2023-11-19 07:48:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,814 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 07:48:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203383354] [2023-11-19 07:48:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203383354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:18,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:18,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404714521] [2023-11-19 07:48:18,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:18,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2023-11-19 07:48:18,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 07:48:18,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:18,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2023-11-19 07:48:18,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:19,495 INFO L124 PetriNetUnfolderBase]: 1547/2487 cut-off events. [2023-11-19 07:48:19,495 INFO L125 PetriNetUnfolderBase]: For 3405/3448 co-relation queries the response was YES. [2023-11-19 07:48:19,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8140 conditions, 2487 events. 1547/2487 cut-off events. For 3405/3448 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13227 event pairs, 330 based on Foata normal form. 151/2635 useless extension candidates. Maximal degree in co-relation 8131. Up to 1882 conditions per place. [2023-11-19 07:48:19,525 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 40 selfloop transitions, 5 changer transitions 34/83 dead transitions. [2023-11-19 07:48:19,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 576 flow [2023-11-19 07:48:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2023-11-19 07:48:19,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647773279352227 [2023-11-19 07:48:19,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2023-11-19 07:48:19,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2023-11-19 07:48:19,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:19,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2023-11-19 07:48:19,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 07:48:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:19,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:19,537 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 184 flow. Second operand 5 states and 574 transitions. [2023-11-19 07:48:19,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 576 flow [2023-11-19 07:48:19,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:19,544 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 217 flow [2023-11-19 07:48:19,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-19 07:48:19,545 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-11-19 07:48:19,546 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 217 flow [2023-11-19 07:48:19,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 07:48:19,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:19,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:19,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:19,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1413474097, now seen corresponding path program 1 times [2023-11-19 07:48:19,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116376938] [2023-11-19 07:48:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,734 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 07:48:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116376938] [2023-11-19 07:48:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116376938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118001334] [2023-11-19 07:48:19,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:19,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2023-11-19 07:48:19,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 07:48:19,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:19,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2023-11-19 07:48:19,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:20,552 INFO L124 PetriNetUnfolderBase]: 1862/2896 cut-off events. [2023-11-19 07:48:20,552 INFO L125 PetriNetUnfolderBase]: For 6244/6310 co-relation queries the response was YES. [2023-11-19 07:48:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10278 conditions, 2896 events. 1862/2896 cut-off events. For 6244/6310 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15613 event pairs, 498 based on Foata normal form. 169/3044 useless extension candidates. Maximal degree in co-relation 10266. Up to 1402 conditions per place. [2023-11-19 07:48:20,596 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 43 selfloop transitions, 6 changer transitions 23/76 dead transitions. [2023-11-19 07:48:20,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 562 flow [2023-11-19 07:48:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-11-19 07:48:20,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46639676113360323 [2023-11-19 07:48:20,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-11-19 07:48:20,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-11-19 07:48:20,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:20,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-11-19 07:48:20,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 07:48:20,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:20,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:20,609 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 217 flow. Second operand 5 states and 576 transitions. [2023-11-19 07:48:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 562 flow [2023-11-19 07:48:20,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 539 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:20,641 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 226 flow [2023-11-19 07:48:20,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-11-19 07:48:20,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-19 07:48:20,649 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 226 flow [2023-11-19 07:48:20,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 07:48:20,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:20,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:48:20,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1460603459, now seen corresponding path program 1 times [2023-11-19 07:48:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504421535] [2023-11-19 07:48:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:21,237 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 07:48:21,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504421535] [2023-11-19 07:48:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504421535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:21,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:21,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:21,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767843518] [2023-11-19 07:48:21,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:21,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:21,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:21,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:21,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 226 flow. Second operand has 5 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 07:48:21,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:21,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:21,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:22,129 INFO L124 PetriNetUnfolderBase]: 2198/3402 cut-off events. [2023-11-19 07:48:22,129 INFO L125 PetriNetUnfolderBase]: For 8811/8974 co-relation queries the response was YES. [2023-11-19 07:48:22,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11941 conditions, 3402 events. 2198/3402 cut-off events. For 8811/8974 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18190 event pairs, 722 based on Foata normal form. 254/3631 useless extension candidates. Maximal degree in co-relation 11928. Up to 2753 conditions per place. [2023-11-19 07:48:22,166 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 43 selfloop transitions, 4 changer transitions 19/73 dead transitions. [2023-11-19 07:48:22,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 538 flow [2023-11-19 07:48:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2023-11-19 07:48:22,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672064777327935 [2023-11-19 07:48:22,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2023-11-19 07:48:22,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2023-11-19 07:48:22,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:22,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2023-11-19 07:48:22,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states 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 07:48:22,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:22,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:22,179 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 226 flow. Second operand 5 states and 577 transitions. [2023-11-19 07:48:22,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 538 flow [2023-11-19 07:48:22,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 514 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:22,213 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 252 flow [2023-11-19 07:48:22,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-19 07:48:22,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-11-19 07:48:22,215 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 252 flow [2023-11-19 07:48:22,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 07:48:22,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:22,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:22,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:22,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:22,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -417740973, now seen corresponding path program 1 times [2023-11-19 07:48:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019510028] [2023-11-19 07:48:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:22,423 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 07:48:22,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:22,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019510028] [2023-11-19 07:48:22,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019510028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:22,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:22,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:22,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087885763] [2023-11-19 07:48:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:22,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2023-11-19 07:48:22,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 07:48:22,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:22,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2023-11-19 07:48:22,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:23,536 INFO L124 PetriNetUnfolderBase]: 2924/4578 cut-off events. [2023-11-19 07:48:23,537 INFO L125 PetriNetUnfolderBase]: For 10503/10610 co-relation queries the response was YES. [2023-11-19 07:48:23,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16655 conditions, 4578 events. 2924/4578 cut-off events. For 10503/10610 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 27299 event pairs, 819 based on Foata normal form. 226/4681 useless extension candidates. Maximal degree in co-relation 16642. Up to 2174 conditions per place. [2023-11-19 07:48:23,577 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 47 selfloop transitions, 5 changer transitions 23/80 dead transitions. [2023-11-19 07:48:23,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 599 flow [2023-11-19 07:48:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-11-19 07:48:23,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46639676113360323 [2023-11-19 07:48:23,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-11-19 07:48:23,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-11-19 07:48:23,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:23,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-11-19 07:48:23,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 07:48:23,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:23,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:23,588 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 252 flow. Second operand 5 states and 576 transitions. [2023-11-19 07:48:23,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 599 flow [2023-11-19 07:48:23,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 591 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:23,606 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 259 flow [2023-11-19 07:48:23,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-19 07:48:23,607 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-11-19 07:48:23,607 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 259 flow [2023-11-19 07:48:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 07:48:23,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:23,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:48:23,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:23,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -685435266, now seen corresponding path program 1 times [2023-11-19 07:48:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603033107] [2023-11-19 07:48:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,427 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 07:48:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:24,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603033107] [2023-11-19 07:48:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603033107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180788960] [2023-11-19 07:48:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:24,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:24,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 07:48:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:24,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:25,696 INFO L124 PetriNetUnfolderBase]: 3188/5005 cut-off events. [2023-11-19 07:48:25,697 INFO L125 PetriNetUnfolderBase]: For 14557/14732 co-relation queries the response was YES. [2023-11-19 07:48:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18562 conditions, 5005 events. 3188/5005 cut-off events. For 14557/14732 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 29211 event pairs, 1038 based on Foata normal form. 341/5308 useless extension candidates. Maximal degree in co-relation 18547. Up to 4030 conditions per place. [2023-11-19 07:48:25,744 INFO L140 encePairwiseOnDemand]: 238/247 looper letters, 55 selfloop transitions, 14 changer transitions 18/93 dead transitions. [2023-11-19 07:48:25,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 733 flow [2023-11-19 07:48:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2023-11-19 07:48:25,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676113360323887 [2023-11-19 07:48:25,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2023-11-19 07:48:25,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2023-11-19 07:48:25,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:25,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2023-11-19 07:48:25,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 07:48:25,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:25,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:25,759 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 259 flow. Second operand 6 states and 693 transitions. [2023-11-19 07:48:25,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 733 flow [2023-11-19 07:48:25,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 722 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:25,792 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 408 flow [2023-11-19 07:48:25,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-19 07:48:25,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-11-19 07:48:25,794 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 408 flow [2023-11-19 07:48:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 07:48:25,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:25,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:48:25,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1965372307, now seen corresponding path program 1 times [2023-11-19 07:48:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665277537] [2023-11-19 07:48:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:26,584 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 07:48:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665277537] [2023-11-19 07:48:26,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665277537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:26,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:26,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650943958] [2023-11-19 07:48:26,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:26,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:26,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:26,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 07:48:26,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:26,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:27,855 INFO L124 PetriNetUnfolderBase]: 3072/4785 cut-off events. [2023-11-19 07:48:27,855 INFO L125 PetriNetUnfolderBase]: For 19146/19323 co-relation queries the response was YES. [2023-11-19 07:48:27,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20984 conditions, 4785 events. 3072/4785 cut-off events. For 19146/19323 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27252 event pairs, 1299 based on Foata normal form. 239/4978 useless extension candidates. Maximal degree in co-relation 20967. Up to 3880 conditions per place. [2023-11-19 07:48:27,913 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 58 selfloop transitions, 12 changer transitions 29/105 dead transitions. [2023-11-19 07:48:27,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 983 flow [2023-11-19 07:48:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-11-19 07:48:27,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644303065355697 [2023-11-19 07:48:27,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-11-19 07:48:27,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-11-19 07:48:27,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:27,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-11-19 07:48:27,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 07:48:27,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:27,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:27,931 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 408 flow. Second operand 7 states and 803 transitions. [2023-11-19 07:48:27,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 983 flow [2023-11-19 07:48:27,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 979 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:27,973 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 487 flow [2023-11-19 07:48:27,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-11-19 07:48:27,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-19 07:48:27,976 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 487 flow [2023-11-19 07:48:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 07:48:27,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:27,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:27,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:48:27,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:27,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1965980620, now seen corresponding path program 2 times [2023-11-19 07:48:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210062289] [2023-11-19 07:48:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210062289] [2023-11-19 07:48:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210062289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631775205] [2023-11-19 07:48:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:28,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2023-11-19 07:48:28,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 487 flow. Second operand has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 07:48:28,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:28,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2023-11-19 07:48:28,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:29,905 INFO L124 PetriNetUnfolderBase]: 3096/4870 cut-off events. [2023-11-19 07:48:29,905 INFO L125 PetriNetUnfolderBase]: For 32091/32313 co-relation queries the response was YES. [2023-11-19 07:48:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23636 conditions, 4870 events. 3096/4870 cut-off events. For 32091/32313 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28216 event pairs, 1030 based on Foata normal form. 378/5231 useless extension candidates. Maximal degree in co-relation 23615. Up to 3817 conditions per place. [2023-11-19 07:48:29,960 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 68 selfloop transitions, 16 changer transitions 18/108 dead transitions. [2023-11-19 07:48:29,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 1079 flow [2023-11-19 07:48:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 688 transitions. [2023-11-19 07:48:29,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642375168690958 [2023-11-19 07:48:29,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 688 transitions. [2023-11-19 07:48:29,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 688 transitions. [2023-11-19 07:48:29,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:29,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 688 transitions. [2023-11-19 07:48:29,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:29,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:29,976 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 487 flow. Second operand 6 states and 688 transitions. [2023-11-19 07:48:29,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 1079 flow [2023-11-19 07:48:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 108 transitions, 1051 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:30,065 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 613 flow [2023-11-19 07:48:30,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-19 07:48:30,066 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-19 07:48:30,066 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 613 flow [2023-11-19 07:48:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 07:48:30,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:30,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:30,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:48:30,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:30,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash 798315486, now seen corresponding path program 1 times [2023-11-19 07:48:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663189706] [2023-11-19 07:48:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:30,786 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 07:48:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663189706] [2023-11-19 07:48:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663189706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69682991] [2023-11-19 07:48:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:30,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 247 [2023-11-19 07:48:30,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 613 flow. Second operand has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:30,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 247 [2023-11-19 07:48:30,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:32,281 INFO L124 PetriNetUnfolderBase]: 3086/4847 cut-off events. [2023-11-19 07:48:32,281 INFO L125 PetriNetUnfolderBase]: For 39327/39532 co-relation queries the response was YES. [2023-11-19 07:48:32,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26320 conditions, 4847 events. 3086/4847 cut-off events. For 39327/39532 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27834 event pairs, 1248 based on Foata normal form. 278/5107 useless extension candidates. Maximal degree in co-relation 26298. Up to 3835 conditions per place. [2023-11-19 07:48:32,323 INFO L140 encePairwiseOnDemand]: 238/247 looper letters, 74 selfloop transitions, 19 changer transitions 20/119 dead transitions. [2023-11-19 07:48:32,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 119 transitions, 1351 flow [2023-11-19 07:48:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 790 transitions. [2023-11-19 07:48:32,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569115095430885 [2023-11-19 07:48:32,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 790 transitions. [2023-11-19 07:48:32,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 790 transitions. [2023-11-19 07:48:32,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:32,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 790 transitions. [2023-11-19 07:48:32,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states 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 07:48:32,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:32,339 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:48:32,339 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 613 flow. Second operand 7 states and 790 transitions. [2023-11-19 07:48:32,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 119 transitions, 1351 flow [2023-11-19 07:48:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 1312 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:32,465 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 762 flow [2023-11-19 07:48:32,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-11-19 07:48:32,467 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-19 07:48:32,467 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 762 flow [2023-11-19 07:48:32,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:32,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:32,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:32,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:48:32,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:32,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 796468444, now seen corresponding path program 1 times [2023-11-19 07:48:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740186216] [2023-11-19 07:48:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:33,885 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 07:48:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:33,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740186216] [2023-11-19 07:48:33,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740186216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:33,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519239908] [2023-11-19 07:48:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:34,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 247 [2023-11-19 07:48:34,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 762 flow. Second operand has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 07:48:34,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:34,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 247 [2023-11-19 07:48:34,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:35,314 INFO L124 PetriNetUnfolderBase]: 3582/5516 cut-off events. [2023-11-19 07:48:35,314 INFO L125 PetriNetUnfolderBase]: For 52371/52371 co-relation queries the response was YES. [2023-11-19 07:48:35,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32244 conditions, 5516 events. 3582/5516 cut-off events. For 52371/52371 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30587 event pairs, 1059 based on Foata normal form. 142/5658 useless extension candidates. Maximal degree in co-relation 32219. Up to 3725 conditions per place. [2023-11-19 07:48:35,362 INFO L140 encePairwiseOnDemand]: 234/247 looper letters, 79 selfloop transitions, 46 changer transitions 41/166 dead transitions. [2023-11-19 07:48:35,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 166 transitions, 2007 flow [2023-11-19 07:48:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:48:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:48:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 962 transitions. [2023-11-19 07:48:35,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-11-19 07:48:35,370 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 962 transitions. [2023-11-19 07:48:35,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 962 transitions. [2023-11-19 07:48:35,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:35,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 962 transitions. [2023-11-19 07:48:35,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.88888888888889) internal successors, (962), 9 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 07:48:35,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states 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 07:48:35,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states 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 07:48:35,384 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 762 flow. Second operand 9 states and 962 transitions. [2023-11-19 07:48:35,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 166 transitions, 2007 flow [2023-11-19 07:48:35,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 166 transitions, 1904 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:35,550 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 1102 flow [2023-11-19 07:48:35,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1102, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2023-11-19 07:48:35,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-11-19 07:48:35,553 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 1102 flow [2023-11-19 07:48:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 07:48:35,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:35,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:35,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:48:35,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:35,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash 895978920, now seen corresponding path program 2 times [2023-11-19 07:48:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467173699] [2023-11-19 07:48:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:35,976 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 07:48:35,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:35,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467173699] [2023-11-19 07:48:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467173699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:35,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346000072] [2023-11-19 07:48:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:35,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:36,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 247 [2023-11-19 07:48:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 07:48:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 247 [2023-11-19 07:48:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:37,244 INFO L124 PetriNetUnfolderBase]: 3253/5130 cut-off events. [2023-11-19 07:48:37,245 INFO L125 PetriNetUnfolderBase]: For 88587/89131 co-relation queries the response was YES. [2023-11-19 07:48:37,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36096 conditions, 5130 events. 3253/5130 cut-off events. For 88587/89131 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30200 event pairs, 1359 based on Foata normal form. 580/5668 useless extension candidates. Maximal degree in co-relation 36066. Up to 3980 conditions per place. [2023-11-19 07:48:37,296 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 80 selfloop transitions, 28 changer transitions 18/134 dead transitions. [2023-11-19 07:48:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 134 transitions, 1985 flow [2023-11-19 07:48:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2023-11-19 07:48:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446693657219973 [2023-11-19 07:48:37,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2023-11-19 07:48:37,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2023-11-19 07:48:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2023-11-19 07:48:37,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 07:48:37,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:37,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 07:48:37,310 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 1102 flow. Second operand 6 states and 662 transitions. [2023-11-19 07:48:37,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 134 transitions, 1985 flow [2023-11-19 07:48:37,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 1812 flow, removed 82 selfloop flow, removed 7 redundant places. [2023-11-19 07:48:37,597 INFO L231 Difference]: Finished difference. Result has 79 places, 108 transitions, 1395 flow [2023-11-19 07:48:37,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1395, PETRI_PLACES=79, PETRI_TRANSITIONS=108} [2023-11-19 07:48:37,598 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-11-19 07:48:37,598 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 108 transitions, 1395 flow [2023-11-19 07:48:37,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 07:48:37,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:37,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:48:37,600 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1836879808, now seen corresponding path program 3 times [2023-11-19 07:48:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080785676] [2023-11-19 07:48:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:38,686 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 07:48:38,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:38,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080785676] [2023-11-19 07:48:38,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080785676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:38,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:38,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:48:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070139970] [2023-11-19 07:48:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:38,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:38,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:38,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 247 [2023-11-19 07:48:38,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 108 transitions, 1395 flow. Second operand has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:48:38,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:38,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 247 [2023-11-19 07:48:38,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:40,029 INFO L124 PetriNetUnfolderBase]: 3617/5680 cut-off events. [2023-11-19 07:48:40,029 INFO L125 PetriNetUnfolderBase]: For 67873/67873 co-relation queries the response was YES. [2023-11-19 07:48:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38238 conditions, 5680 events. 3617/5680 cut-off events. For 67873/67873 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32914 event pairs, 961 based on Foata normal form. 170/5850 useless extension candidates. Maximal degree in co-relation 38210. Up to 3728 conditions per place. [2023-11-19 07:48:40,074 INFO L140 encePairwiseOnDemand]: 236/247 looper letters, 74 selfloop transitions, 80 changer transitions 37/191 dead transitions. [2023-11-19 07:48:40,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 191 transitions, 2775 flow [2023-11-19 07:48:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:48:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 840 transitions. [2023-11-19 07:48:40,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251012145748988 [2023-11-19 07:48:40,080 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 840 transitions. [2023-11-19 07:48:40,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 840 transitions. [2023-11-19 07:48:40,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:40,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 840 transitions. [2023-11-19 07:48:40,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 07:48:40,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states 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 07:48:40,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states 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 07:48:40,090 INFO L175 Difference]: Start difference. First operand has 79 places, 108 transitions, 1395 flow. Second operand 8 states and 840 transitions. [2023-11-19 07:48:40,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 191 transitions, 2775 flow [2023-11-19 07:48:40,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 191 transitions, 2656 flow, removed 44 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:40,277 INFO L231 Difference]: Finished difference. Result has 86 places, 133 transitions, 2046 flow [2023-11-19 07:48:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2046, PETRI_PLACES=86, PETRI_TRANSITIONS=133} [2023-11-19 07:48:40,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-11-19 07:48:40,278 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 133 transitions, 2046 flow [2023-11-19 07:48:40,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:48:40,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:40,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:40,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:48:40,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:40,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash 895143793, now seen corresponding path program 1 times [2023-11-19 07:48:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195678827] [2023-11-19 07:48:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:40,421 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 07:48:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195678827] [2023-11-19 07:48:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195678827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:40,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533170420] [2023-11-19 07:48:40,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:40,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:40,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:40,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 133 transitions, 2046 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:40,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:40,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:41,049 INFO L124 PetriNetUnfolderBase]: 1474/2550 cut-off events. [2023-11-19 07:48:41,049 INFO L125 PetriNetUnfolderBase]: For 51251/51835 co-relation queries the response was YES. [2023-11-19 07:48:41,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19837 conditions, 2550 events. 1474/2550 cut-off events. For 51251/51835 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15109 event pairs, 346 based on Foata normal form. 497/3024 useless extension candidates. Maximal degree in co-relation 19805. Up to 1951 conditions per place. [2023-11-19 07:48:41,069 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 114 selfloop transitions, 4 changer transitions 13/149 dead transitions. [2023-11-19 07:48:41,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 149 transitions, 2534 flow [2023-11-19 07:48:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-11-19 07:48:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-19 07:48:41,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-11-19 07:48:41,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-11-19 07:48:41,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:41,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-11-19 07:48:41,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 07:48:41,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 07:48:41,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 07:48:41,077 INFO L175 Difference]: Start difference. First operand has 86 places, 133 transitions, 2046 flow. Second operand 3 states and 351 transitions. [2023-11-19 07:48:41,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 149 transitions, 2534 flow [2023-11-19 07:48:41,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 149 transitions, 2489 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:41,162 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 1573 flow [2023-11-19 07:48:41,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1573, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2023-11-19 07:48:41,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-11-19 07:48:41,163 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 1573 flow [2023-11-19 07:48:41,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:41,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:41,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:41,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:48:41,164 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:41,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 753433870, now seen corresponding path program 1 times [2023-11-19 07:48:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:41,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45316582] [2023-11-19 07:48:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:41,319 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 07:48:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45316582] [2023-11-19 07:48:41,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45316582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:41,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:41,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:41,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69996960] [2023-11-19 07:48:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:41,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:41,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:41,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:41,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:41,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 1573 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 07:48:41,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:41,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:41,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:41,622 INFO L124 PetriNetUnfolderBase]: 624/1182 cut-off events. [2023-11-19 07:48:41,622 INFO L125 PetriNetUnfolderBase]: For 20197/20346 co-relation queries the response was YES. [2023-11-19 07:48:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 1182 events. 624/1182 cut-off events. For 20197/20346 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6491 event pairs, 64 based on Foata normal form. 226/1393 useless extension candidates. Maximal degree in co-relation 9222. Up to 599 conditions per place. [2023-11-19 07:48:41,629 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 105 selfloop transitions, 7 changer transitions 19/145 dead transitions. [2023-11-19 07:48:41,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 145 transitions, 2407 flow [2023-11-19 07:48:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:48:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-11-19 07:48:41,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-19 07:48:41,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-11-19 07:48:41,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-11-19 07:48:41,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:41,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-11-19 07:48:41,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 07:48:41,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 07:48:41,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 07:48:41,637 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 1573 flow. Second operand 4 states and 468 transitions. [2023-11-19 07:48:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 145 transitions, 2407 flow [2023-11-19 07:48:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 2349 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:41,675 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 1218 flow [2023-11-19 07:48:41,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1218, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-11-19 07:48:41,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-11-19 07:48:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 1218 flow [2023-11-19 07:48:41,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 07:48:41,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:41,677 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 07:48:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:48:41,677 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:41,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash -896026854, now seen corresponding path program 1 times [2023-11-19 07:48:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632265307] [2023-11-19 07:48:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:41,865 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 07:48:41,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632265307] [2023-11-19 07:48:41,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632265307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:41,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:41,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266784391] [2023-11-19 07:48:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:41,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:41,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 247 [2023-11-19 07:48:41,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 1218 flow. Second operand has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 07:48:41,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:41,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 247 [2023-11-19 07:48:41,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:42,137 INFO L124 PetriNetUnfolderBase]: 472/905 cut-off events. [2023-11-19 07:48:42,137 INFO L125 PetriNetUnfolderBase]: For 13654/13747 co-relation queries the response was YES. [2023-11-19 07:48:42,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7136 conditions, 905 events. 472/905 cut-off events. For 13654/13747 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4969 event pairs, 48 based on Foata normal form. 90/980 useless extension candidates. Maximal degree in co-relation 7105. Up to 458 conditions per place. [2023-11-19 07:48:42,143 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 49 selfloop transitions, 10 changer transitions 60/123 dead transitions. [2023-11-19 07:48:42,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 1965 flow [2023-11-19 07:48:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2023-11-19 07:48:42,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647773279352227 [2023-11-19 07:48:42,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2023-11-19 07:48:42,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2023-11-19 07:48:42,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:42,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2023-11-19 07:48:42,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 07:48:42,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:42,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 07:48:42,157 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 1218 flow. Second operand 5 states and 574 transitions. [2023-11-19 07:48:42,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 1965 flow [2023-11-19 07:48:42,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 123 transitions, 1745 flow, removed 75 selfloop flow, removed 6 redundant places. [2023-11-19 07:48:42,214 INFO L231 Difference]: Finished difference. Result has 82 places, 42 transitions, 474 flow [2023-11-19 07:48:42,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=82, PETRI_TRANSITIONS=42} [2023-11-19 07:48:42,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-11-19 07:48:42,215 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 42 transitions, 474 flow [2023-11-19 07:48:42,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 07:48:42,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:42,216 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 07:48:42,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:48:42,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:48:42,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1341166660, now seen corresponding path program 1 times [2023-11-19 07:48:42,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:42,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589701951] [2023-11-19 07:48:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:44,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589701951] [2023-11-19 07:48:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589701951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:48:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955192013] [2023-11-19 07:48:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:44,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:48:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:48:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:48:44,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 247 [2023-11-19 07:48:44,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 42 transitions, 474 flow. Second operand has 10 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 07:48:44,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:44,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 247 [2023-11-19 07:48:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand