./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:56,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:56,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:21:56,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:56,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:56,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:56,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:56,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:56,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:56,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:56,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:56,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:56,633 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:56,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:56,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:56,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:56,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:56,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:56,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:21:56,637 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:21:56,638 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:21:56,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:56,639 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:21:56,639 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:56,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:56,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:56,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:56,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:56,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:56,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:56,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:56,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:56,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:56,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:56,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:56,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:56,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:56,645 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:56,645 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_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2023-11-12 02:21:56,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:57,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:57,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:57,026 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:57,026 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:57,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2023-11-12 02:22:00,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:00,398 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:00,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2023-11-12 02:22:00,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/data/1aad172d9/b00c97547e5240e2b6b915270c233694/FLAGeb65f7912 [2023-11-12 02:22:00,426 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/data/1aad172d9/b00c97547e5240e2b6b915270c233694 [2023-11-12 02:22:00,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:00,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:00,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:00,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:00,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:00,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8e2e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00, skipping insertion in model container [2023-11-12 02:22:00,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:00,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:00,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:00,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:00,736 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:00,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00 WrapperNode [2023-11-12 02:22:00,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:00,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:00,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:00,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:00,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,791 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2023-11-12 02:22:00,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:00,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:00,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:00,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:00,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:00,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:00,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:00,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:00,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:00,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:00,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1a3bdcc-4d58-4935-b758-e2135c78d45c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:22:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:22:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:22:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:22:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:22:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:22:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:22:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:22:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-12 02:22:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-12 02:22:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-12 02:22:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-12 02:22:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:00,919 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:22:01,039 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:01,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:01,519 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:01,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:01,530 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:22:01,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:01 BoogieIcfgContainer [2023-11-12 02:22:01,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:01,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:01,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:01,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:01,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:00" (1/3) ... [2023-11-12 02:22:01,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d65ac01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:01, skipping insertion in model container [2023-11-12 02:22:01,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00" (2/3) ... [2023-11-12 02:22:01,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d65ac01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:01, skipping insertion in model container [2023-11-12 02:22:01,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:01" (3/3) ... [2023-11-12 02:22:01,546 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-11-12 02:22:01,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:01,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-12 02:22:01,562 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:22:01,672 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-12 02:22:01,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 209 transitions, 460 flow [2023-11-12 02:22:01,879 INFO L124 PetriNetUnfolderBase]: 14/203 cut-off events. [2023-11-12 02:22:01,880 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:22:01,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 203 events. 14/203 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-12 02:22:01,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 209 transitions, 460 flow [2023-11-12 02:22:01,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 198 transitions, 432 flow [2023-11-12 02:22:01,898 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:01,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 198 transitions, 432 flow [2023-11-12 02:22:01,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 198 transitions, 432 flow [2023-11-12 02:22:01,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 198 transitions, 432 flow [2023-11-12 02:22:01,960 INFO L124 PetriNetUnfolderBase]: 14/198 cut-off events. [2023-11-12 02:22:01,960 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:22:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 198 events. 14/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-12 02:22:01,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-11-12 02:22:12,922 INFO L134 LiptonReduction]: Checked pairs total: 5992 [2023-11-12 02:22:12,922 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-12 02:22:12,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:12,946 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;@4456263c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:12,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-12 02:22:12,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:12,949 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:22:12,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:12,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:22:12,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:12,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:12,956 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2023-11-12 02:22:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297257211] [2023-11-12 02:22:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297257211] [2023-11-12 02:22:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297257211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:13,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:13,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:22:13,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875090077] [2023-11-12 02:22:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:13,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:22:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:22:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:22:13,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 394 [2023-11-12 02:22:13,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:13,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:13,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 394 [2023-11-12 02:22:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:18,895 INFO L124 PetriNetUnfolderBase]: 36808/42631 cut-off events. [2023-11-12 02:22:18,895 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2023-11-12 02:22:18,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86034 conditions, 42631 events. 36808/42631 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 153540 event pairs, 17676 based on Foata normal form. 0/20471 useless extension candidates. Maximal degree in co-relation 65244. Up to 42304 conditions per place. [2023-11-12 02:22:19,416 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 59 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2023-11-12 02:22:19,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 284 flow [2023-11-12 02:22:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:22:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:22:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 438 transitions. [2023-11-12 02:22:19,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558375634517766 [2023-11-12 02:22:19,446 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 438 transitions. [2023-11-12 02:22:19,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 438 transitions. [2023-11-12 02:22:19,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:19,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 438 transitions. [2023-11-12 02:22:19,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:19,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:19,469 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:19,471 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 172 flow. Second operand 2 states and 438 transitions. [2023-11-12 02:22:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 284 flow [2023-11-12 02:22:19,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 260 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-12 02:22:19,531 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 142 flow [2023-11-12 02:22:19,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-11-12 02:22:19,538 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places. [2023-11-12 02:22:19,539 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 142 flow [2023-11-12 02:22:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:19,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:19,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:19,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:19,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash 732756, now seen corresponding path program 1 times [2023-11-12 02:22:19,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:19,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725308288] [2023-11-12 02:22:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:19,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725308288] [2023-11-12 02:22:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725308288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:20,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:20,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:20,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398773699] [2023-11-12 02:22:20,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:20,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:20,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:20,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:20,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394 [2023-11-12 02:22:20,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:20,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:20,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394 [2023-11-12 02:22:20,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:24,064 INFO L124 PetriNetUnfolderBase]: 35185/40762 cut-off events. [2023-11-12 02:22:24,065 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:24,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81563 conditions, 40762 events. 35185/40762 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 146083 event pairs, 16865 based on Foata normal form. 0/19659 useless extension candidates. Maximal degree in co-relation 81560. Up to 40434 conditions per place. [2023-11-12 02:22:24,333 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 56 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-11-12 02:22:24,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 252 flow [2023-11-12 02:22:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-11-12 02:22:24,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511844331641286 [2023-11-12 02:22:24,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-11-12 02:22:24,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-11-12 02:22:24,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:24,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-11-12 02:22:24,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:24,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:24,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:24,353 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 142 flow. Second operand 3 states and 605 transitions. [2023-11-12 02:22:24,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 252 flow [2023-11-12 02:22:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:22:24,357 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 140 flow [2023-11-12 02:22:24,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-11-12 02:22:24,359 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places. [2023-11-12 02:22:24,359 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 140 flow [2023-11-12 02:22:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:24,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:24,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:24,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:22:24,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:24,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash 732755, now seen corresponding path program 1 times [2023-11-12 02:22:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:24,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932807496] [2023-11-12 02:22:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:24,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:24,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932807496] [2023-11-12 02:22:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932807496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:24,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:24,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:24,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187656903] [2023-11-12 02:22:24,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:24,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:24,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:24,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2023-11-12 02:22:24,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:24,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:24,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2023-11-12 02:22:24,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:27,281 INFO L124 PetriNetUnfolderBase]: 33562/38893 cut-off events. [2023-11-12 02:22:27,281 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:27,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77827 conditions, 38893 events. 33562/38893 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 138897 event pairs, 16054 based on Foata normal form. 0/18847 useless extension candidates. Maximal degree in co-relation 77823. Up to 38565 conditions per place. [2023-11-12 02:22:27,510 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 54 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-11-12 02:22:27,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 246 flow [2023-11-12 02:22:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-11-12 02:22:27,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48984771573604063 [2023-11-12 02:22:27,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-11-12 02:22:27,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-11-12 02:22:27,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:27,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-11-12 02:22:27,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:27,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:27,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:27,523 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 140 flow. Second operand 3 states and 579 transitions. [2023-11-12 02:22:27,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 246 flow [2023-11-12 02:22:27,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:27,526 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 137 flow [2023-11-12 02:22:27,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-12 02:22:27,527 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2023-11-12 02:22:27,528 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 137 flow [2023-11-12 02:22:27,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:27,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:27,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:22:27,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:22:27,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:27,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash 704193213, now seen corresponding path program 1 times [2023-11-12 02:22:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:27,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353199971] [2023-11-12 02:22:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:27,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:27,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353199971] [2023-11-12 02:22:27,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353199971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:27,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704748753] [2023-11-12 02:22:27,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:27,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:27,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394 [2023-11-12 02:22:27,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:27,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:27,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394 [2023-11-12 02:22:27,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:30,477 INFO L124 PetriNetUnfolderBase]: 33109/38350 cut-off events. [2023-11-12 02:22:30,477 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76742 conditions, 38350 events. 33109/38350 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 136434 event pairs, 15829 based on Foata normal form. 0/18619 useless extension candidates. Maximal degree in co-relation 76738. Up to 38022 conditions per place. [2023-11-12 02:22:30,674 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 52 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-11-12 02:22:30,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 239 flow [2023-11-12 02:22:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-11-12 02:22:30,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084602368866328 [2023-11-12 02:22:30,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-11-12 02:22:30,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-11-12 02:22:30,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:30,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-11-12 02:22:30,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,687 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 137 flow. Second operand 3 states and 601 transitions. [2023-11-12 02:22:30,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 239 flow [2023-11-12 02:22:30,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:30,692 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 134 flow [2023-11-12 02:22:30,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-11-12 02:22:30,695 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places. [2023-11-12 02:22:30,695 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 134 flow [2023-11-12 02:22:30,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:30,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:22:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:22:30,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 704193215, now seen corresponding path program 1 times [2023-11-12 02:22:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097885311] [2023-11-12 02:22:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:30,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:30,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:30,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097885311] [2023-11-12 02:22:30,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097885311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521404338] [2023-11-12 02:22:30,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:30,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2023-11-12 02:22:30,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:30,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:30,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2023-11-12 02:22:30,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:33,577 INFO L124 PetriNetUnfolderBase]: 32656/37807 cut-off events. [2023-11-12 02:22:33,577 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:33,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75657 conditions, 37807 events. 32656/37807 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 134463 event pairs, 15604 based on Foata normal form. 0/18391 useless extension candidates. Maximal degree in co-relation 75653. Up to 37479 conditions per place. [2023-11-12 02:22:33,823 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 50 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-12 02:22:33,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 232 flow [2023-11-12 02:22:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-12 02:22:33,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48646362098138746 [2023-11-12 02:22:33,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-12 02:22:33,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-12 02:22:33,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:33,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-12 02:22:33,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:33,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:33,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:33,838 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 134 flow. Second operand 3 states and 575 transitions. [2023-11-12 02:22:33,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 232 flow [2023-11-12 02:22:33,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:33,843 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 131 flow [2023-11-12 02:22:33,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-11-12 02:22:33,847 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -17 predicate places. [2023-11-12 02:22:33,847 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 131 flow [2023-11-12 02:22:33,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:33,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:33,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:22:33,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:33,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1875137253, now seen corresponding path program 1 times [2023-11-12 02:22:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:33,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358462722] [2023-11-12 02:22:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358462722] [2023-11-12 02:22:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358462722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:34,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890733449] [2023-11-12 02:22:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:34,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:34,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394 [2023-11-12 02:22:34,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:34,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:34,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394 [2023-11-12 02:22:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:36,528 INFO L124 PetriNetUnfolderBase]: 32449/37546 cut-off events. [2023-11-12 02:22:36,529 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:36,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75136 conditions, 37546 events. 32449/37546 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 133380 event pairs, 15505 based on Foata normal form. 0/18292 useless extension candidates. Maximal degree in co-relation 75132. Up to 37218 conditions per place. [2023-11-12 02:22:36,702 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 48 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-12 02:22:36,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 225 flow [2023-11-12 02:22:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-11-12 02:22:36,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050761421319797 [2023-11-12 02:22:36,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-11-12 02:22:36,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-11-12 02:22:36,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:36,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-11-12 02:22:36,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:36,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:36,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:36,714 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 131 flow. Second operand 3 states and 597 transitions. [2023-11-12 02:22:36,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 225 flow [2023-11-12 02:22:36,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:36,717 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 128 flow [2023-11-12 02:22:36,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-11-12 02:22:36,718 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2023-11-12 02:22:36,718 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 128 flow [2023-11-12 02:22:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:36,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:36,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:36,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:22:36,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:36,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1875137254, now seen corresponding path program 1 times [2023-11-12 02:22:36,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:36,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241350736] [2023-11-12 02:22:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:36,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241350736] [2023-11-12 02:22:36,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241350736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:36,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271854322] [2023-11-12 02:22:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:36,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:36,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:36,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2023-11-12 02:22:36,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2023-11-12 02:22:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:39,340 INFO L124 PetriNetUnfolderBase]: 32242/37285 cut-off events. [2023-11-12 02:22:39,341 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74615 conditions, 37285 events. 32242/37285 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 132158 event pairs, 15406 based on Foata normal form. 0/18193 useless extension candidates. Maximal degree in co-relation 74611. Up to 36957 conditions per place. [2023-11-12 02:22:39,565 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 46 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-12 02:22:39,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 218 flow [2023-11-12 02:22:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-11-12 02:22:39,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48307952622673433 [2023-11-12 02:22:39,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-11-12 02:22:39,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-11-12 02:22:39,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:39,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-11-12 02:22:39,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,577 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 128 flow. Second operand 3 states and 571 transitions. [2023-11-12 02:22:39,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 218 flow [2023-11-12 02:22:39,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:39,580 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 125 flow [2023-11-12 02:22:39,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-11-12 02:22:39,582 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -19 predicate places. [2023-11-12 02:22:39,582 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 125 flow [2023-11-12 02:22:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:39,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:39,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:39,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1879381819, now seen corresponding path program 1 times [2023-11-12 02:22:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060575851] [2023-11-12 02:22:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060575851] [2023-11-12 02:22:39,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060575851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:39,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:39,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:39,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094678138] [2023-11-12 02:22:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:39,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:39,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2023-11-12 02:22:39,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:39,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:39,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2023-11-12 02:22:39,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:42,084 INFO L124 PetriNetUnfolderBase]: 31804/36757 cut-off events. [2023-11-12 02:22:42,085 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73560 conditions, 36757 events. 31804/36757 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 129860 event pairs, 15196 based on Foata normal form. 0/17983 useless extension candidates. Maximal degree in co-relation 73556. Up to 36429 conditions per place. [2023-11-12 02:22:42,590 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 44 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-12 02:22:42,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 211 flow [2023-11-12 02:22:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-11-12 02:22:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813874788494078 [2023-11-12 02:22:42,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-11-12 02:22:42,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-11-12 02:22:42,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:42,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-11-12 02:22:42,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,598 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 125 flow. Second operand 3 states and 569 transitions. [2023-11-12 02:22:42,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 211 flow [2023-11-12 02:22:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:42,600 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 122 flow [2023-11-12 02:22:42,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-11-12 02:22:42,601 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places. [2023-11-12 02:22:42,601 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 122 flow [2023-11-12 02:22:42,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:42,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:22:42,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1879381818, now seen corresponding path program 1 times [2023-11-12 02:22:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681573590] [2023-11-12 02:22:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:42,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681573590] [2023-11-12 02:22:42,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681573590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:42,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:42,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:42,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620944283] [2023-11-12 02:22:42,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:42,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:42,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394 [2023-11-12 02:22:42,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:42,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394 [2023-11-12 02:22:42,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:45,671 INFO L124 PetriNetUnfolderBase]: 31366/36229 cut-off events. [2023-11-12 02:22:45,671 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:22:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72505 conditions, 36229 events. 31366/36229 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 127688 event pairs, 14986 based on Foata normal form. 0/17773 useless extension candidates. Maximal degree in co-relation 72501. Up to 35901 conditions per place. [2023-11-12 02:22:45,868 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 42 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-12 02:22:45,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 204 flow [2023-11-12 02:22:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-11-12 02:22:45,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-12 02:22:45,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-11-12 02:22:45,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-11-12 02:22:45,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:45,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-11-12 02:22:45,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:45,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:45,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:45,876 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 122 flow. Second operand 3 states and 591 transitions. [2023-11-12 02:22:45,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 204 flow [2023-11-12 02:22:45,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:45,877 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 119 flow [2023-11-12 02:22:45,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-12 02:22:45,878 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -21 predicate places. [2023-11-12 02:22:45,879 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 119 flow [2023-11-12 02:22:45,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:45,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:45,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:22:45,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-12 02:22:45,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2095285681, now seen corresponding path program 1 times [2023-11-12 02:22:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416868184] [2023-11-12 02:22:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416868184] [2023-11-12 02:22:45,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416868184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:45,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:45,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:45,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13878476] [2023-11-12 02:22:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:45,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:45,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:46,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394 [2023-11-12 02:22:46,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:46,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:46,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394 [2023-11-12 02:22:46,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand