./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:28,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:28,583 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:54:28,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:28,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:28,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:28,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:28,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:28,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:28,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:28,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:28,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:28,623 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:28,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:28,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:28,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:28,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:28,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:28,626 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:54:28,627 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:54:28,628 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:54:28,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:28,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:54:28,629 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:54:28,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:28,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:28,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:28,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:28,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:28,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:28,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:28,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:28,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:28,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:28,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:28,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:28,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:28,636 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:28,636 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_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 [2023-11-06 22:54:28,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:28,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:28,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:28,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:28,909 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:28,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2023-11-06 22:54:32,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:54:32,282 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:54:32,283 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2023-11-06 22:54:32,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/data/5bd839587/9e123fab80bb44b889521b5704a48dce/FLAG0ffdc0212 [2023-11-06 22:54:32,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/data/5bd839587/9e123fab80bb44b889521b5704a48dce [2023-11-06 22:54:32,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:54:32,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:54:32,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:32,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:54:32,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:54:32,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62706598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32, skipping insertion in model container [2023-11-06 22:54:32,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:54:32,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:32,612 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:54:32,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:32,659 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:54:32,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32 WrapperNode [2023-11-06 22:54:32,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:32,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:32,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:54:32,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:54:32,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,705 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2023-11-06 22:54:32,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:32,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:54:32,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:54:32,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:54:32,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:54:32,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:54:32,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:54:32,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:54:32,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (1/1) ... [2023-11-06 22:54:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:32,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:32,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:54:32,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:54:32,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:54:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:54:32,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:54:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:54:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:54:32,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:54:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:54:32,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:54:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:54:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:54:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 22:54:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 22:54:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-06 22:54:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-06 22:54:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:54:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:54:32,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:54:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:54:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:54:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:54:32,872 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:54:33,045 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:54:33,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:54:33,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:54:33,511 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:54:33,511 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:54:33,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:33 BoogieIcfgContainer [2023-11-06 22:54:33,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:54:33,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:54:33,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:54:33,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:54:33,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:54:32" (1/3) ... [2023-11-06 22:54:33,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:33, skipping insertion in model container [2023-11-06 22:54:33,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:32" (2/3) ... [2023-11-06 22:54:33,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:33, skipping insertion in model container [2023-11-06 22:54:33,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:33" (3/3) ... [2023-11-06 22:54:33,529 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-11-06 22:54:33,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:54:33,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:54:33,551 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:54:33,672 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-06 22:54:33,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 203 transitions, 448 flow [2023-11-06 22:54:33,819 INFO L124 PetriNetUnfolderBase]: 14/197 cut-off events. [2023-11-06 22:54:33,819 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:54:33,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 197 events. 14/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-11-06 22:54:33,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 203 transitions, 448 flow [2023-11-06 22:54:33,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 192 transitions, 420 flow [2023-11-06 22:54:33,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:33,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 192 transitions, 420 flow [2023-11-06 22:54:33,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 192 transitions, 420 flow [2023-11-06 22:54:33,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 192 transitions, 420 flow [2023-11-06 22:54:33,946 INFO L124 PetriNetUnfolderBase]: 14/192 cut-off events. [2023-11-06 22:54:33,947 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:54:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 192 events. 14/192 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-11-06 22:54:33,953 INFO L119 LiptonReduction]: Number of co-enabled transitions 3780 [2023-11-06 22:54:44,552 INFO L134 LiptonReduction]: Checked pairs total: 5124 [2023-11-06 22:54:44,553 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-06 22:54:44,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:44,576 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;@7b9971bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:44,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-06 22:54:44,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:44,578 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:54:44,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:54:44,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:44,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:54:44,580 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)] === [2023-11-06 22:54:44,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash 722, now seen corresponding path program 1 times [2023-11-06 22:54:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:44,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555032741] [2023-11-06 22:54:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555032741] [2023-11-06 22:54:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555032741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:54:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025075116] [2023-11-06 22:54:44,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:44,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:54:44,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:54:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:54:44,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 389 [2023-11-06 22:54:44,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:44,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:44,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 389 [2023-11-06 22:54:44,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:45,311 INFO L124 PetriNetUnfolderBase]: 3537/4292 cut-off events. [2023-11-06 22:54:45,312 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-06 22:54:45,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 4292 events. 3537/4292 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11046 event pairs, 1737 based on Foata normal form. 0/2116 useless extension candidates. Maximal degree in co-relation 6140. Up to 4293 conditions per place. [2023-11-06 22:54:45,358 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 59 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-11-06 22:54:45,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 272 flow [2023-11-06 22:54:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:54:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:54:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 426 transitions. [2023-11-06 22:54:45,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475578406169666 [2023-11-06 22:54:45,385 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 426 transitions. [2023-11-06 22:54:45,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 426 transitions. [2023-11-06 22:54:45,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:45,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 426 transitions. [2023-11-06 22:54:45,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:45,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:45,407 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:45,409 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 160 flow. Second operand 2 states and 426 transitions. [2023-11-06 22:54:45,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 272 flow [2023-11-06 22:54:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 248 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 22:54:45,423 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 130 flow [2023-11-06 22:54:45,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-06 22:54:45,431 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-11-06 22:54:45,432 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 130 flow [2023-11-06 22:54:45,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:45,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:45,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:54:45,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:54:45,433 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)] === [2023-11-06 22:54:45,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash 708726, now seen corresponding path program 1 times [2023-11-06 22:54:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417655167] [2023-11-06 22:54:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417655167] [2023-11-06 22:54:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417655167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491215409] [2023-11-06 22:54:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:46,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:46,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 389 [2023-11-06 22:54:46,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 130 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) [2023-11-06 22:54:46,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:46,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 389 [2023-11-06 22:54:46,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:46,545 INFO L124 PetriNetUnfolderBase]: 3375/4096 cut-off events. [2023-11-06 22:54:46,545 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:46,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 4096 events. 3375/4096 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10432 event pairs, 1656 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 8255. Up to 4096 conditions per place. [2023-11-06 22:54:46,577 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-06 22:54:46,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 240 flow [2023-11-06 22:54:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2023-11-06 22:54:46,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029991431019709 [2023-11-06 22:54:46,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2023-11-06 22:54:46,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2023-11-06 22:54:46,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:46,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2023-11-06 22:54:46,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,591 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 130 flow. Second operand 3 states and 587 transitions. [2023-11-06 22:54:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 240 flow [2023-11-06 22:54:46,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:46,594 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 128 flow [2023-11-06 22:54:46,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=128, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-06 22:54:46,595 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-11-06 22:54:46,595 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 128 flow [2023-11-06 22:54:46,596 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) [2023-11-06 22:54:46,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:46,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:54:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:54:46,597 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)] === [2023-11-06 22:54:46,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 708727, now seen corresponding path program 1 times [2023-11-06 22:54:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025681239] [2023-11-06 22:54:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025681239] [2023-11-06 22:54:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025681239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909569424] [2023-11-06 22:54:46,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:46,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 389 [2023-11-06 22:54:46,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:46,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 389 [2023-11-06 22:54:46,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:47,267 INFO L124 PetriNetUnfolderBase]: 3213/3900 cut-off events. [2023-11-06 22:54:47,268 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3900 events. 3213/3900 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9845 event pairs, 1575 based on Foata normal form. 0/1954 useless extension candidates. Maximal degree in co-relation 7864. Up to 3900 conditions per place. [2023-11-06 22:54:47,330 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-06 22:54:47,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2023-11-06 22:54:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-11-06 22:54:47,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480719794344473 [2023-11-06 22:54:47,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-11-06 22:54:47,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-11-06 22:54:47,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:47,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-11-06 22:54:47,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:47,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:47,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:47,343 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 128 flow. Second operand 3 states and 561 transitions. [2023-11-06 22:54:47,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2023-11-06 22:54:47,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:47,347 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 125 flow [2023-11-06 22:54:47,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=125, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-06 22:54:47,349 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2023-11-06 22:54:47,349 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 125 flow [2023-11-06 22:54:47,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:47,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:47,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:54:47,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:54:47,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:47,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 681103632, now seen corresponding path program 1 times [2023-11-06 22:54:47,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:47,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030928536] [2023-11-06 22:54:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:47,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:47,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030928536] [2023-11-06 22:54:47,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030928536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:47,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:47,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:47,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403721692] [2023-11-06 22:54:47,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:47,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:47,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 389 [2023-11-06 22:54:47,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:47,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:47,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 389 [2023-11-06 22:54:47,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:47,993 INFO L124 PetriNetUnfolderBase]: 3141/3808 cut-off events. [2023-11-06 22:54:47,994 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 3808 events. 3141/3808 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9563 event pairs, 1539 based on Foata normal form. 0/1918 useless extension candidates. Maximal degree in co-relation 7681. Up to 3808 conditions per place. [2023-11-06 22:54:48,024 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-06 22:54:48,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 227 flow [2023-11-06 22:54:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2023-11-06 22:54:48,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47900599828620394 [2023-11-06 22:54:48,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2023-11-06 22:54:48,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2023-11-06 22:54:48,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:48,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2023-11-06 22:54:48,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,036 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 125 flow. Second operand 3 states and 559 transitions. [2023-11-06 22:54:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 227 flow [2023-11-06 22:54:48,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:48,038 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2023-11-06 22:54:48,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-06 22:54:48,040 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-11-06 22:54:48,040 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2023-11-06 22:54:48,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:48,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:54:48,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:54:48,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:48,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 681103633, now seen corresponding path program 1 times [2023-11-06 22:54:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495183290] [2023-11-06 22:54:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:48,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:48,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495183290] [2023-11-06 22:54:48,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495183290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:48,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132481624] [2023-11-06 22:54:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:48,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:48,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 389 [2023-11-06 22:54:48,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 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) [2023-11-06 22:54:48,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:48,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 389 [2023-11-06 22:54:48,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:48,688 INFO L124 PetriNetUnfolderBase]: 3069/3716 cut-off events. [2023-11-06 22:54:48,689 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:48,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 3716 events. 3069/3716 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9284 event pairs, 1503 based on Foata normal form. 0/1882 useless extension candidates. Maximal degree in co-relation 7498. Up to 3716 conditions per place. [2023-11-06 22:54:48,723 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-06 22:54:48,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 220 flow [2023-11-06 22:54:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-11-06 22:54:48,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49785775492716366 [2023-11-06 22:54:48,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-11-06 22:54:48,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-11-06 22:54:48,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:48,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-11-06 22:54:48,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,735 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 581 transitions. [2023-11-06 22:54:48,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 220 flow [2023-11-06 22:54:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:48,739 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2023-11-06 22:54:48,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-11-06 22:54:48,743 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-11-06 22:54:48,743 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2023-11-06 22:54:48,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 22:54:48,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:48,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:48,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:54:48,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:48,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1705579181, now seen corresponding path program 1 times [2023-11-06 22:54:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260480640] [2023-11-06 22:54:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:48,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260480640] [2023-11-06 22:54:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260480640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:48,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:48,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065487699] [2023-11-06 22:54:48,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:48,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 389 [2023-11-06 22:54:48,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:48,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:48,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 389 [2023-11-06 22:54:48,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:49,252 INFO L124 PetriNetUnfolderBase]: 3021/3652 cut-off events. [2023-11-06 22:54:49,253 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:49,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3652 events. 3021/3652 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9107 event pairs, 1479 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 7371. Up to 3652 conditions per place. [2023-11-06 22:54:49,280 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-06 22:54:49,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 213 flow [2023-11-06 22:54:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-11-06 22:54:49,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755784061696658 [2023-11-06 22:54:49,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-11-06 22:54:49,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-11-06 22:54:49,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:49,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-11-06 22:54:49,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-06 22:54:49,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,292 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 119 flow. Second operand 3 states and 555 transitions. [2023-11-06 22:54:49,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 213 flow [2023-11-06 22:54:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:49,294 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 116 flow [2023-11-06 22:54:49,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=116, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-06 22:54:49,296 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -18 predicate places. [2023-11-06 22:54:49,296 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 116 flow [2023-11-06 22:54:49,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:49,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:49,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:54:49,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:49,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1705579179, now seen corresponding path program 1 times [2023-11-06 22:54:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256151540] [2023-11-06 22:54:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:49,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:49,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256151540] [2023-11-06 22:54:49,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256151540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:49,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117480969] [2023-11-06 22:54:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:49,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 389 [2023-11-06 22:54:49,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 389 [2023-11-06 22:54:49,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:49,870 INFO L124 PetriNetUnfolderBase]: 2973/3588 cut-off events. [2023-11-06 22:54:49,871 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:49,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3588 events. 2973/3588 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8921 event pairs, 1455 based on Foata normal form. 0/1834 useless extension candidates. Maximal degree in co-relation 7244. Up to 3588 conditions per place. [2023-11-06 22:54:49,900 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-06 22:54:49,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 206 flow [2023-11-06 22:54:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2023-11-06 22:54:49,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944301628106255 [2023-11-06 22:54:49,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2023-11-06 22:54:49,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2023-11-06 22:54:49,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:49,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2023-11-06 22:54:49,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,911 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 116 flow. Second operand 3 states and 577 transitions. [2023-11-06 22:54:49,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 206 flow [2023-11-06 22:54:49,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:49,913 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 113 flow [2023-11-06 22:54:49,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-06 22:54:49,914 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-11-06 22:54:49,914 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 113 flow [2023-11-06 22:54:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:49,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:49,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:49,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:54:49,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:49,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1615898993, now seen corresponding path program 1 times [2023-11-06 22:54:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572563036] [2023-11-06 22:54:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:50,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:50,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572563036] [2023-11-06 22:54:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572563036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:50,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519510114] [2023-11-06 22:54:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:50,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:50,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 389 [2023-11-06 22:54:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 389 [2023-11-06 22:54:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:50,405 INFO L124 PetriNetUnfolderBase]: 2901/3496 cut-off events. [2023-11-06 22:54:50,406 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:50,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 3496 events. 2901/3496 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8650 event pairs, 1419 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 7061. Up to 3496 conditions per place. [2023-11-06 22:54:50,433 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 22:54:50,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 199 flow [2023-11-06 22:54:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-06 22:54:50,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271636675235647 [2023-11-06 22:54:50,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-06 22:54:50,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-06 22:54:50,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:50,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-06 22:54:50,439 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) [2023-11-06 22:54:50,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,443 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 113 flow. Second operand 3 states and 575 transitions. [2023-11-06 22:54:50,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 199 flow [2023-11-06 22:54:50,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:50,445 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 110 flow [2023-11-06 22:54:50,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-06 22:54:50,446 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-11-06 22:54:50,446 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 110 flow [2023-11-06 22:54:50,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:50,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:50,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:54:50,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:50,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1615898994, now seen corresponding path program 1 times [2023-11-06 22:54:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:50,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280251632] [2023-11-06 22:54:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280251632] [2023-11-06 22:54:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280251632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289193650] [2023-11-06 22:54:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:50,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:50,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 389 [2023-11-06 22:54:50,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:50,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 389 [2023-11-06 22:54:50,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:50,909 INFO L124 PetriNetUnfolderBase]: 2829/3404 cut-off events. [2023-11-06 22:54:50,909 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 3404 events. 2829/3404 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8381 event pairs, 1383 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 6878. Up to 3404 conditions per place. [2023-11-06 22:54:50,937 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-06 22:54:50,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 192 flow [2023-11-06 22:54:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2023-11-06 22:54:50,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704370179948586 [2023-11-06 22:54:50,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2023-11-06 22:54:50,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2023-11-06 22:54:50,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:50,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2023-11-06 22:54:50,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-06 22:54:50,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,947 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 110 flow. Second operand 3 states and 549 transitions. [2023-11-06 22:54:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 192 flow [2023-11-06 22:54:50,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:50,949 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 107 flow [2023-11-06 22:54:50,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-11-06 22:54:50,950 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-11-06 22:54:50,950 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 107 flow [2023-11-06 22:54:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:50,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:50,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:50,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:54:50,952 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)] === [2023-11-06 22:54:50,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1899242941, now seen corresponding path program 1 times [2023-11-06 22:54:50,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:50,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157739901] [2023-11-06 22:54:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157739901] [2023-11-06 22:54:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157739901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:51,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:51,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054474034] [2023-11-06 22:54:51,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:51,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:51,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:51,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:51,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 389 [2023-11-06 22:54:51,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:51,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 389 [2023-11-06 22:54:51,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:51,385 INFO L124 PetriNetUnfolderBase]: 2667/3208 cut-off events. [2023-11-06 22:54:51,385 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 3208 events. 2667/3208 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7805 event pairs, 1302 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 6487. Up to 3208 conditions per place. [2023-11-06 22:54:51,408 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-06 22:54:51,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 185 flow [2023-11-06 22:54:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-11-06 22:54:51,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46872322193658955 [2023-11-06 22:54:51,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-11-06 22:54:51,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-11-06 22:54:51,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:51,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-11-06 22:54:51,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,418 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 3 states and 547 transitions. [2023-11-06 22:54:51,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 185 flow [2023-11-06 22:54:51,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:51,420 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 104 flow [2023-11-06 22:54:51,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-06 22:54:51,423 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-11-06 22:54:51,423 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 104 flow [2023-11-06 22:54:51,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:51,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:51,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:54:51,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:51,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1899242939, now seen corresponding path program 1 times [2023-11-06 22:54:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:51,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125691394] [2023-11-06 22:54:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:51,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:51,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:51,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125691394] [2023-11-06 22:54:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125691394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:51,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:51,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034935285] [2023-11-06 22:54:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:51,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:51,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 389 [2023-11-06 22:54:51,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:51,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 389 [2023-11-06 22:54:51,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:51,911 INFO L124 PetriNetUnfolderBase]: 2505/3012 cut-off events. [2023-11-06 22:54:51,911 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:51,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3012 events. 2505/3012 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7225 event pairs, 1221 based on Foata normal form. 0/1600 useless extension candidates. Maximal degree in co-relation 6096. Up to 3012 conditions per place. [2023-11-06 22:54:51,931 INFO L140 encePairwiseOnDemand]: 386/389 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-06 22:54:51,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 178 flow [2023-11-06 22:54:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-11-06 22:54:51,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875749785775493 [2023-11-06 22:54:51,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-11-06 22:54:51,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-11-06 22:54:51,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:51,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-11-06 22:54:51,937 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) [2023-11-06 22:54:51,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,942 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 104 flow. Second operand 3 states and 569 transitions. [2023-11-06 22:54:51,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 178 flow [2023-11-06 22:54:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:51,944 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 101 flow [2023-11-06 22:54:51,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-06 22:54:51,945 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-11-06 22:54:51,945 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 101 flow [2023-11-06 22:54:51,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:51,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:51,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:51,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:54:51,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:51,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:51,947 INFO L85 PathProgramCache]: Analyzing trace with hash -188619322, now seen corresponding path program 1 times [2023-11-06 22:54:51,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:51,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791627074] [2023-11-06 22:54:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:52,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791627074] [2023-11-06 22:54:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791627074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:54:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410055638] [2023-11-06 22:54:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:52,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:53,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 389 [2023-11-06 22:54:53,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:53,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:53,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 389 [2023-11-06 22:54:53,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:53,684 INFO L124 PetriNetUnfolderBase]: 2121/2564 cut-off events. [2023-11-06 22:54:53,684 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:53,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5205 conditions, 2564 events. 2121/2564 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5940 event pairs, 1029 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 5201. Up to 2564 conditions per place. [2023-11-06 22:54:53,700 INFO L140 encePairwiseOnDemand]: 387/389 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:54:53,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 38 transitions, 175 flow [2023-11-06 22:54:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-11-06 22:54:53,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43958868894601544 [2023-11-06 22:54:53,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-11-06 22:54:53,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-11-06 22:54:53,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:53,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-11-06 22:54:53,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:53,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:53,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:53,710 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 101 flow. Second operand 3 states and 513 transitions. [2023-11-06 22:54:53,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 38 transitions, 175 flow [2023-11-06 22:54:53,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:53,712 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 100 flow [2023-11-06 22:54:53,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-11-06 22:54:53,713 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-11-06 22:54:53,713 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 100 flow [2023-11-06 22:54:53,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:53,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:53,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:53,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:54:53,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:53,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -188619323, now seen corresponding path program 1 times [2023-11-06 22:54:53,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:53,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508231360] [2023-11-06 22:54:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:53,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508231360] [2023-11-06 22:54:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508231360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:54:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238637810] [2023-11-06 22:54:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:54:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:54:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:54:54,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 389 [2023-11-06 22:54:54,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 100 flow. Second operand has 8 states, 8 states have (on average 149.625) internal successors, (1197), 8 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:54,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 389 [2023-11-06 22:54:54,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:54,471 INFO L124 PetriNetUnfolderBase]: 1737/2116 cut-off events. [2023-11-06 22:54:54,471 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:54,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2116 events. 1737/2116 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4757 event pairs, 837 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 4306. Up to 2116 conditions per place. [2023-11-06 22:54:54,483 INFO L140 encePairwiseOnDemand]: 387/389 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-06 22:54:54,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 172 flow [2023-11-06 22:54:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-11-06 22:54:54,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130248500428449 [2023-11-06 22:54:54,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-11-06 22:54:54,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-11-06 22:54:54,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:54,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-11-06 22:54:54,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,492 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 100 flow. Second operand 3 states and 482 transitions. [2023-11-06 22:54:54,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 172 flow [2023-11-06 22:54:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:54,494 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 99 flow [2023-11-06 22:54:54,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-11-06 22:54:54,495 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-11-06 22:54:54,495 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 99 flow [2023-11-06 22:54:54,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.625) internal successors, (1197), 8 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:54,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:54,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:54:54,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:54,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1961112669, now seen corresponding path program 1 times [2023-11-06 22:54:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:54,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434634726] [2023-11-06 22:54:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:54,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:54,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434634726] [2023-11-06 22:54:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434634726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:54,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991456004] [2023-11-06 22:54:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:54,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:54,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 389 [2023-11-06 22:54:54,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:54,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:54,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 389 [2023-11-06 22:54:54,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:55,298 INFO L124 PetriNetUnfolderBase]: 3473/4229 cut-off events. [2023-11-06 22:54:55,299 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 22:54:55,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 4229 events. 3473/4229 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11700 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 8595. Up to 3015 conditions per place. [2023-11-06 22:54:55,327 INFO L140 encePairwiseOnDemand]: 381/389 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-11-06 22:54:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 320 flow [2023-11-06 22:54:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-11-06 22:54:55,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832904884318766 [2023-11-06 22:54:55,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-11-06 22:54:55,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-11-06 22:54:55,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:55,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-11-06 22:54:55,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:55,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:55,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:55,337 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 99 flow. Second operand 3 states and 564 transitions. [2023-11-06 22:54:55,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 320 flow [2023-11-06 22:54:55,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:55,339 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 145 flow [2023-11-06 22:54:55,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-11-06 22:54:55,340 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-11-06 22:54:55,340 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 145 flow [2023-11-06 22:54:55,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:55,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:55,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:55,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:54:55,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:55,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash 978848381, now seen corresponding path program 1 times [2023-11-06 22:54:55,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:55,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32335571] [2023-11-06 22:54:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32335571] [2023-11-06 22:54:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32335571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:55,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:55,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:55,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850031094] [2023-11-06 22:54:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:55,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:54:55,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:54:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:54:55,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:54:55,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:55,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:55,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:54:55,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:56,370 INFO L124 PetriNetUnfolderBase]: 5029/6151 cut-off events. [2023-11-06 22:54:56,370 INFO L125 PetriNetUnfolderBase]: For 2251/2251 co-relation queries the response was YES. [2023-11-06 22:54:56,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15853 conditions, 6151 events. 5029/6151 cut-off events. For 2251/2251 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18963 event pairs, 315 based on Foata normal form. 160/6311 useless extension candidates. Maximal degree in co-relation 15848. Up to 2803 conditions per place. [2023-11-06 22:54:56,422 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 112 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2023-11-06 22:54:56,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 122 transitions, 615 flow [2023-11-06 22:54:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:54:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:54:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2023-11-06 22:54:56,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460154241645243 [2023-11-06 22:54:56,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2023-11-06 22:54:56,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2023-11-06 22:54:56,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:56,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2023-11-06 22:54:56,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:56,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:56,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:56,436 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 145 flow. Second operand 5 states and 962 transitions. [2023-11-06 22:54:56,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 122 transitions, 615 flow [2023-11-06 22:54:56,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:56,440 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 203 flow [2023-11-06 22:54:56,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-06 22:54:56,441 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-11-06 22:54:56,441 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 203 flow [2023-11-06 22:54:56,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:56,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:56,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:54:56,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:56,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1133173441, now seen corresponding path program 1 times [2023-11-06 22:54:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:56,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292400625] [2023-11-06 22:54:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:56,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:56,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292400625] [2023-11-06 22:54:56,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292400625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:54:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038906684] [2023-11-06 22:54:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:56,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:54:56,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:56,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:54:56,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:54:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:56,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:54:56,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:54:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:56,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:54:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:56,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038906684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:54:56,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:54:56,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:54:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633127209] [2023-11-06 22:54:56,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:54:56,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:56,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:56,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:57,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:54:57,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:57,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:57,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:54:57,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:58,609 INFO L124 PetriNetUnfolderBase]: 11273/13819 cut-off events. [2023-11-06 22:54:58,610 INFO L125 PetriNetUnfolderBase]: For 12347/12347 co-relation queries the response was YES. [2023-11-06 22:54:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40868 conditions, 13819 events. 11273/13819 cut-off events. For 12347/12347 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 47950 event pairs, 2617 based on Foata normal form. 308/14127 useless extension candidates. Maximal degree in co-relation 40861. Up to 5865 conditions per place. [2023-11-06 22:54:58,733 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 147 selfloop transitions, 8 changer transitions 0/155 dead transitions. [2023-11-06 22:54:58,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 155 transitions, 898 flow [2023-11-06 22:54:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:54:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:54:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 976 transitions. [2023-11-06 22:54:58,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017994858611825 [2023-11-06 22:54:58,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 976 transitions. [2023-11-06 22:54:58,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 976 transitions. [2023-11-06 22:54:58,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:58,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 976 transitions. [2023-11-06 22:54:58,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,747 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,747 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 203 flow. Second operand 5 states and 976 transitions. [2023-11-06 22:54:58,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 155 transitions, 898 flow [2023-11-06 22:54:58,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 155 transitions, 898 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:58,766 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 258 flow [2023-11-06 22:54:58,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-06 22:54:58,766 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-11-06 22:54:58,766 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 258 flow [2023-11-06 22:54:58,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:58,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:58,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:54:58,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:54:58,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:54:58,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash 652678919, now seen corresponding path program 2 times [2023-11-06 22:54:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:58,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989356923] [2023-11-06 22:54:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:58,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989356923] [2023-11-06 22:54:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989356923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698954117] [2023-11-06 22:54:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:54:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:54:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:54:59,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:54:59,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:59,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:59,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:54:59,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:00,607 INFO L124 PetriNetUnfolderBase]: 9535/11649 cut-off events. [2023-11-06 22:55:00,607 INFO L125 PetriNetUnfolderBase]: For 15707/15707 co-relation queries the response was YES. [2023-11-06 22:55:00,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39207 conditions, 11649 events. 9535/11649 cut-off events. For 15707/15707 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 40128 event pairs, 532 based on Foata normal form. 170/11819 useless extension candidates. Maximal degree in co-relation 39196. Up to 4899 conditions per place. [2023-11-06 22:55:00,716 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 144 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2023-11-06 22:55:00,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 155 transitions, 975 flow [2023-11-06 22:55:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 966 transitions. [2023-11-06 22:55:00,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966580976863753 [2023-11-06 22:55:00,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 966 transitions. [2023-11-06 22:55:00,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 966 transitions. [2023-11-06 22:55:00,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:00,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 966 transitions. [2023-11-06 22:55:00,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:00,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:00,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:00,731 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 258 flow. Second operand 5 states and 966 transitions. [2023-11-06 22:55:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 155 transitions, 975 flow [2023-11-06 22:55:00,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 975 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:55:00,797 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 319 flow [2023-11-06 22:55:00,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-11-06 22:55:00,798 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-06 22:55:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 319 flow [2023-11-06 22:55:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:00,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:00,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:55:00,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:00,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1638341744, now seen corresponding path program 1 times [2023-11-06 22:55:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695018854] [2023-11-06 22:55:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:01,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695018854] [2023-11-06 22:55:01,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695018854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:01,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:01,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669980111] [2023-11-06 22:55:01,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:01,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:01,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:01,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:01,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:01,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:01,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:02,370 INFO L124 PetriNetUnfolderBase]: 9269/11383 cut-off events. [2023-11-06 22:55:02,370 INFO L125 PetriNetUnfolderBase]: For 20281/20281 co-relation queries the response was YES. [2023-11-06 22:55:02,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40360 conditions, 11383 events. 9269/11383 cut-off events. For 20281/20281 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 39918 event pairs, 516 based on Foata normal form. 266/11649 useless extension candidates. Maximal degree in co-relation 40347. Up to 4633 conditions per place. [2023-11-06 22:55:02,461 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 145 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2023-11-06 22:55:02,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 988 flow [2023-11-06 22:55:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 965 transitions. [2023-11-06 22:55:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4961439588688946 [2023-11-06 22:55:02,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 965 transitions. [2023-11-06 22:55:02,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 965 transitions. [2023-11-06 22:55:02,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:02,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 965 transitions. [2023-11-06 22:55:02,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,474 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,474 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 319 flow. Second operand 5 states and 965 transitions. [2023-11-06 22:55:02,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 988 flow [2023-11-06 22:55:02,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 153 transitions, 977 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:02,531 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 322 flow [2023-11-06 22:55:02,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2023-11-06 22:55:02,532 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-06 22:55:02,532 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 322 flow [2023-11-06 22:55:02,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:02,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:55:02,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:02,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1130643168, now seen corresponding path program 1 times [2023-11-06 22:55:02,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:02,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023725372] [2023-11-06 22:55:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:02,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023725372] [2023-11-06 22:55:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023725372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700116598] [2023-11-06 22:55:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:02,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:02,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:04,014 INFO L124 PetriNetUnfolderBase]: 8977/11091 cut-off events. [2023-11-06 22:55:04,014 INFO L125 PetriNetUnfolderBase]: For 23221/23221 co-relation queries the response was YES. [2023-11-06 22:55:04,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39956 conditions, 11091 events. 8977/11091 cut-off events. For 23221/23221 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 39528 event pairs, 471 based on Foata normal form. 292/11383 useless extension candidates. Maximal degree in co-relation 39942. Up to 4465 conditions per place. [2023-11-06 22:55:04,095 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 148 selfloop transitions, 8 changer transitions 0/156 dead transitions. [2023-11-06 22:55:04,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1126 flow [2023-11-06 22:55:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 961 transitions. [2023-11-06 22:55:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49408740359897174 [2023-11-06 22:55:04,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 961 transitions. [2023-11-06 22:55:04,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 961 transitions. [2023-11-06 22:55:04,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:04,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 961 transitions. [2023-11-06 22:55:04,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:04,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:04,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:04,111 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 322 flow. Second operand 5 states and 961 transitions. [2023-11-06 22:55:04,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1126 flow [2023-11-06 22:55:04,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 1089 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:04,129 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 325 flow [2023-11-06 22:55:04,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-11-06 22:55:04,130 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2023-11-06 22:55:04,131 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 325 flow [2023-11-06 22:55:04,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:04,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:04,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:04,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:55:04,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:04,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash -575260618, now seen corresponding path program 1 times [2023-11-06 22:55:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723883628] [2023-11-06 22:55:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:04,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723883628] [2023-11-06 22:55:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723883628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001607849] [2023-11-06 22:55:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:04,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:04,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:04,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:55:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:04,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:55:04,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:04,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:04,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001607849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:04,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:55:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:55:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353300426] [2023-11-06 22:55:04,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:04,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:04,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:04,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:04,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:04,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:07,859 INFO L124 PetriNetUnfolderBase]: 19421/23953 cut-off events. [2023-11-06 22:55:07,859 INFO L125 PetriNetUnfolderBase]: For 56007/56007 co-relation queries the response was YES. [2023-11-06 22:55:08,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89261 conditions, 23953 events. 19421/23953 cut-off events. For 56007/56007 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 92079 event pairs, 3927 based on Foata normal form. 600/24553 useless extension candidates. Maximal degree in co-relation 89246. Up to 9970 conditions per place. [2023-11-06 22:55:08,218 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 166 selfloop transitions, 8 changer transitions 0/174 dead transitions. [2023-11-06 22:55:08,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 174 transitions, 1312 flow [2023-11-06 22:55:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 960 transitions. [2023-11-06 22:55:08,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.493573264781491 [2023-11-06 22:55:08,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 960 transitions. [2023-11-06 22:55:08,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 960 transitions. [2023-11-06 22:55:08,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:08,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 960 transitions. [2023-11-06 22:55:08,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:08,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:08,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:08,233 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 325 flow. Second operand 5 states and 960 transitions. [2023-11-06 22:55:08,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 174 transitions, 1312 flow [2023-11-06 22:55:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 174 transitions, 1293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:08,256 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 373 flow [2023-11-06 22:55:08,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-11-06 22:55:08,256 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2023-11-06 22:55:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 373 flow [2023-11-06 22:55:08,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:08,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:08,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:08,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:08,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:08,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:08,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1574230046, now seen corresponding path program 2 times [2023-11-06 22:55:08,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:08,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038718600] [2023-11-06 22:55:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038718600] [2023-11-06 22:55:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038718600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684014402] [2023-11-06 22:55:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:08,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:08,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:08,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:08,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:11,012 INFO L124 PetriNetUnfolderBase]: 17013/20937 cut-off events. [2023-11-06 22:55:11,013 INFO L125 PetriNetUnfolderBase]: For 50380/50380 co-relation queries the response was YES. [2023-11-06 22:55:11,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87561 conditions, 20937 events. 17013/20937 cut-off events. For 50380/50380 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 79326 event pairs, 1151 based on Foata normal form. 296/21233 useless extension candidates. Maximal degree in co-relation 87542. Up to 8606 conditions per place. [2023-11-06 22:55:11,245 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 170 selfloop transitions, 11 changer transitions 0/181 dead transitions. [2023-11-06 22:55:11,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 181 transitions, 1416 flow [2023-11-06 22:55:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 958 transitions. [2023-11-06 22:55:11,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49254498714652956 [2023-11-06 22:55:11,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 958 transitions. [2023-11-06 22:55:11,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 958 transitions. [2023-11-06 22:55:11,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:11,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 958 transitions. [2023-11-06 22:55:11,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.6) internal successors, (958), 5 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:11,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:11,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:11,258 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 373 flow. Second operand 5 states and 958 transitions. [2023-11-06 22:55:11,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 181 transitions, 1416 flow [2023-11-06 22:55:11,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 181 transitions, 1416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:55:11,538 INFO L231 Difference]: Finished difference. Result has 90 places, 68 transitions, 434 flow [2023-11-06 22:55:11,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2023-11-06 22:55:11,539 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2023-11-06 22:55:11,540 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 434 flow [2023-11-06 22:55:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:11,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:11,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:55:11,541 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:11,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1060084219, now seen corresponding path program 2 times [2023-11-06 22:55:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379977588] [2023-11-06 22:55:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:11,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379977588] [2023-11-06 22:55:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379977588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879171683] [2023-11-06 22:55:11,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:55:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:11,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:11,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:55:11,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:55:11,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:55:11,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:55:11,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:12,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879171683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:12,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:55:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:55:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520736560] [2023-11-06 22:55:12,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:12,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:12,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:12,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:12,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:12,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:15,392 INFO L124 PetriNetUnfolderBase]: 21381/26225 cut-off events. [2023-11-06 22:55:15,392 INFO L125 PetriNetUnfolderBase]: For 76245/76245 co-relation queries the response was YES. [2023-11-06 22:55:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116520 conditions, 26225 events. 21381/26225 cut-off events. For 76245/76245 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101911 event pairs, 4683 based on Foata normal form. 920/27145 useless extension candidates. Maximal degree in co-relation 116499. Up to 12101 conditions per place. [2023-11-06 22:55:15,614 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 183 selfloop transitions, 8 changer transitions 0/191 dead transitions. [2023-11-06 22:55:15,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 191 transitions, 1541 flow [2023-11-06 22:55:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2023-11-06 22:55:15,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460154241645243 [2023-11-06 22:55:15,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2023-11-06 22:55:15,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2023-11-06 22:55:15,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:15,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2023-11-06 22:55:15,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:15,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:15,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:15,626 INFO L175 Difference]: Start difference. First operand has 90 places, 68 transitions, 434 flow. Second operand 5 states and 962 transitions. [2023-11-06 22:55:15,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 191 transitions, 1541 flow [2023-11-06 22:55:15,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 191 transitions, 1501 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:15,872 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 471 flow [2023-11-06 22:55:15,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2023-11-06 22:55:15,873 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2023-11-06 22:55:15,873 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 471 flow [2023-11-06 22:55:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:15,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:15,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:15,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:16,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:55:16,074 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:16,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1059531599, now seen corresponding path program 1 times [2023-11-06 22:55:16,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:16,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063710859] [2023-11-06 22:55:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:16,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063710859] [2023-11-06 22:55:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063710859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634638366] [2023-11-06 22:55:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:16,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:16,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:16,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:16,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:16,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:16,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:19,421 INFO L124 PetriNetUnfolderBase]: 21005/25849 cut-off events. [2023-11-06 22:55:19,422 INFO L125 PetriNetUnfolderBase]: For 89403/89403 co-relation queries the response was YES. [2023-11-06 22:55:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120263 conditions, 25849 events. 21005/25849 cut-off events. For 89403/89403 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101605 event pairs, 1383 based on Foata normal form. 376/26225 useless extension candidates. Maximal degree in co-relation 120239. Up to 11497 conditions per place. [2023-11-06 22:55:19,692 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 183 selfloop transitions, 8 changer transitions 0/191 dead transitions. [2023-11-06 22:55:19,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 191 transitions, 1626 flow [2023-11-06 22:55:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 957 transitions. [2023-11-06 22:55:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49203084832904886 [2023-11-06 22:55:19,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 957 transitions. [2023-11-06 22:55:19,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 957 transitions. [2023-11-06 22:55:19,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:19,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 957 transitions. [2023-11-06 22:55:19,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.4) internal successors, (957), 5 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:19,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:19,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:19,706 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 471 flow. Second operand 5 states and 957 transitions. [2023-11-06 22:55:19,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 191 transitions, 1626 flow [2023-11-06 22:55:20,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 191 transitions, 1597 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:20,385 INFO L231 Difference]: Finished difference. Result has 99 places, 70 transitions, 478 flow [2023-11-06 22:55:20,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2023-11-06 22:55:20,386 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-11-06 22:55:20,386 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 478 flow [2023-11-06 22:55:20,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:20,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:55:20,387 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:20,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 297301593, now seen corresponding path program 2 times [2023-11-06 22:55:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:20,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28563568] [2023-11-06 22:55:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:20,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28563568] [2023-11-06 22:55:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28563568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736249328] [2023-11-06 22:55:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:20,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:20,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:20,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:20,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:23,975 INFO L124 PetriNetUnfolderBase]: 24413/29993 cut-off events. [2023-11-06 22:55:23,975 INFO L125 PetriNetUnfolderBase]: For 104186/104186 co-relation queries the response was YES. [2023-11-06 22:55:24,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142277 conditions, 29993 events. 24413/29993 cut-off events. For 104186/104186 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 116844 event pairs, 4471 based on Foata normal form. 736/30729 useless extension candidates. Maximal degree in co-relation 142252. Up to 16033 conditions per place. [2023-11-06 22:55:24,286 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 177 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-11-06 22:55:24,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 185 transitions, 1572 flow [2023-11-06 22:55:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-11-06 22:55:24,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904884318766067 [2023-11-06 22:55:24,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-11-06 22:55:24,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-11-06 22:55:24,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:24,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-11-06 22:55:24,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:24,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:24,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:24,299 INFO L175 Difference]: Start difference. First operand has 99 places, 70 transitions, 478 flow. Second operand 5 states and 954 transitions. [2023-11-06 22:55:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 185 transitions, 1572 flow [2023-11-06 22:55:24,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 185 transitions, 1559 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:24,706 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 518 flow [2023-11-06 22:55:24,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-11-06 22:55:24,708 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2023-11-06 22:55:24,708 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 518 flow [2023-11-06 22:55:24,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:24,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:24,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:24,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:55:24,709 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:24,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2118909754, now seen corresponding path program 2 times [2023-11-06 22:55:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:24,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914875798] [2023-11-06 22:55:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:24,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:24,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914875798] [2023-11-06 22:55:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914875798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139046660] [2023-11-06 22:55:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:55:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:24,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:24,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:55:25,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:55:25,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:55:25,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:55:25,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:25,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139046660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:25,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:55:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:55:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690574760] [2023-11-06 22:55:25,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:25,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:25,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:25,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 177.83333333333334) internal successors, (1067), 6 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:25,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:25,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:25,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:29,638 INFO L124 PetriNetUnfolderBase]: 29277/35873 cut-off events. [2023-11-06 22:55:29,638 INFO L125 PetriNetUnfolderBase]: For 118876/118876 co-relation queries the response was YES. [2023-11-06 22:55:29,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177332 conditions, 35873 events. 29277/35873 cut-off events. For 118876/118876 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 145145 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 177304. Up to 20069 conditions per place. [2023-11-06 22:55:29,994 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-11-06 22:55:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 201 transitions, 1770 flow [2023-11-06 22:55:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 958 transitions. [2023-11-06 22:55:29,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49254498714652956 [2023-11-06 22:55:29,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 958 transitions. [2023-11-06 22:55:29,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 958 transitions. [2023-11-06 22:55:29,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:29,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 958 transitions. [2023-11-06 22:55:30,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.6) internal successors, (958), 5 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,005 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 518 flow. Second operand 5 states and 958 transitions. [2023-11-06 22:55:30,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 201 transitions, 1770 flow [2023-11-06 22:55:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 201 transitions, 1692 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-11-06 22:55:30,948 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 551 flow [2023-11-06 22:55:30,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2023-11-06 22:55:30,949 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2023-11-06 22:55:30,949 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 551 flow [2023-11-06 22:55:30,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.83333333333334) internal successors, (1067), 6 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:30,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:30,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:55:31,157 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:31,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash -842873246, now seen corresponding path program 2 times [2023-11-06 22:55:31,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:31,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298751549] [2023-11-06 22:55:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:31,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:31,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298751549] [2023-11-06 22:55:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298751549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857937103] [2023-11-06 22:55:31,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:55:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:31,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:31,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:55:31,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:55:31,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:55:31,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:55:31,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:31,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:31,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857937103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:31,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:55:31,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:55:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153387384] [2023-11-06 22:55:31,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 389 [2023-11-06 22:55:31,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:31,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:31,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 389 [2023-11-06 22:55:31,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:36,795 INFO L124 PetriNetUnfolderBase]: 33421/40853 cut-off events. [2023-11-06 22:55:36,795 INFO L125 PetriNetUnfolderBase]: For 179273/179273 co-relation queries the response was YES. [2023-11-06 22:55:37,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205472 conditions, 40853 events. 33421/40853 cut-off events. For 179273/179273 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 162570 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 205442. Up to 23061 conditions per place. [2023-11-06 22:55:37,234 INFO L140 encePairwiseOnDemand]: 384/389 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-11-06 22:55:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 217 transitions, 1955 flow [2023-11-06 22:55:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:55:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:55:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2023-11-06 22:55:37,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460154241645243 [2023-11-06 22:55:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2023-11-06 22:55:37,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2023-11-06 22:55:37,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:37,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2023-11-06 22:55:37,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,246 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 551 flow. Second operand 5 states and 962 transitions. [2023-11-06 22:55:37,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 217 transitions, 1955 flow [2023-11-06 22:55:38,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 217 transitions, 1896 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:38,512 INFO L231 Difference]: Finished difference. Result has 113 places, 79 transitions, 585 flow [2023-11-06 22:55:38,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=113, PETRI_TRANSITIONS=79} [2023-11-06 22:55:38,513 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2023-11-06 22:55:38,514 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 79 transitions, 585 flow [2023-11-06 22:55:38,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:38,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:38,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:38,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:38,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:55:38,719 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-06 22:55:38,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -203026612, now seen corresponding path program 1 times [2023-11-06 22:55:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217811239] [2023-11-06 22:55:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217811239] [2023-11-06 22:55:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217811239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956871957] [2023-11-06 22:55:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:39,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:39,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:39,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:39,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891a16dd-db5e-4b70-8203-8cbdbc717a93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:55:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:41,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:55:41,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:15,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:31,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956871957] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:31,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:31,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-11-06 22:56:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449431209] [2023-11-06 22:56:31,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:31,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:56:31,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:56:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=133, Unknown=14, NotChecked=0, Total=182 [2023-11-06 22:56:33,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:34,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:37,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:38,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:40,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:43,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:45,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:47,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:49,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:51,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:53,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:55,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:57,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:56:57,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 389 [2023-11-06 22:56:57,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 79 transitions, 585 flow. Second operand has 14 states, 14 states have (on average 154.21428571428572) internal successors, (2159), 14 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:57,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:57,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 389 [2023-11-06 22:56:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:00,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:21,196 WARN L293 SmtUtils]: Spent 15.16s on a formula simplification. DAG size of input: 78 DAG size of output: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:57:24,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:25,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:27,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:34,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:36,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:44,402 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 87 DAG size of output: 50 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:57:46,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:48,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:51,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:53,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:55,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:57,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:57:58,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:00,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:02,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:04,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:06,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:09,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:17,511 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 40 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:58:19,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:23,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:58:27,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []