./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:40,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:40,932 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:25:40,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:40,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:40,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:40,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:40,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:40,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:40,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:40,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:40,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:40,993 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:40,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:40,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:40,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:40,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:40,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:40,998 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:25:40,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:25:40,999 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:25:40,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:41,001 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:25:41,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:25:41,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:41,003 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:41,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:41,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:41,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:41,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:41,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:41,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:41,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:41,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:41,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:41,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:41,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:41,009 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:41,009 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_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-12 02:25:41,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:41,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:41,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:41,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:41,336 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:41,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-12 02:25:44,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:44,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:44,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-12 02:25:44,858 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/eaae3d011/f064f137c3ce4cac9dc9609b2ca91992/FLAG33bf1db79 [2023-11-12 02:25:44,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/eaae3d011/f064f137c3ce4cac9dc9609b2ca91992 [2023-11-12 02:25:44,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:44,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:44,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:44,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:44,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:44,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:44" (1/1) ... [2023-11-12 02:25:44,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c253f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:44, skipping insertion in model container [2023-11-12 02:25:44,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:44" (1/1) ... [2023-11-12 02:25:44,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:45,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:45,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:45,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:45,546 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:25:45,546 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:25:45,554 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:45,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45 WrapperNode [2023-11-12 02:25:45,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:45,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:45,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:45,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:45,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,627 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-12 02:25:45,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:45,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:45,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:45,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:45,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:45,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:45,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:45,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:45,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (1/1) ... [2023-11-12 02:25:45,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:45,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:45,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:45,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:25:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:25:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:25:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:25:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:25:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:25:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:25:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:25:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:25:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:45,752 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:25:45,906 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:45,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:46,105 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:46,112 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:46,113 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:25:46,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:46 BoogieIcfgContainer [2023-11-12 02:25:46,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:46,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:46,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:46,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:46,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:44" (1/3) ... [2023-11-12 02:25:46,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311fc39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:46, skipping insertion in model container [2023-11-12 02:25:46,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:45" (2/3) ... [2023-11-12 02:25:46,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311fc39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:46, skipping insertion in model container [2023-11-12 02:25:46,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:46" (3/3) ... [2023-11-12 02:25:46,126 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-12 02:25:46,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:46,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:25:46,171 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:25:46,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:25:46,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-12 02:25:46,382 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-12 02:25:46,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:46,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-12 02:25:46,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-12 02:25:46,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-12 02:25:46,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:46,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-12 02:25:46,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-12 02:25:46,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-12 02:25:46,457 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-12 02:25:46,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:46,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-12 02:25:46,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-12 02:25:49,234 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-12 02:25:49,234 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-12 02:25:49,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:49,273 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;@40ad422f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:49,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 02:25:49,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:25:49,276 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:25:49,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:49,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:49,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:25:49,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:49,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-12 02:25:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:49,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760724362] [2023-11-12 02:25:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:49,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:49,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:49,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760724362] [2023-11-12 02:25:49,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760724362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:49,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:49,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:25:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336319652] [2023-11-12 02:25:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:25:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:25:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:25:49,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-12 02:25:49,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:49,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-12 02:25:49,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:49,608 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-12 02:25:49,609 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:49,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-12 02:25:49,612 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-12 02:25:49,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-12 02:25:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:25:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:25:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-12 02:25:49,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-12 02:25:49,627 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-12 02:25:49,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-12 02:25:49,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:49,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-12 02:25:49,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,641 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,643 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-12 02:25:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-12 02:25:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:49,647 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-12 02:25:49,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-12 02:25:49,653 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-12 02:25:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-12 02:25:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:49,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:25:49,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:49,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-12 02:25:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140577744] [2023-11-12 02:25:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140577744] [2023-11-12 02:25:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140577744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906470981] [2023-11-12 02:25:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:49,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:49,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:49,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:49,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:49,967 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-12 02:25:49,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:49,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-11-12 02:25:49,969 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-12 02:25:49,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-12 02:25:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-12 02:25:49,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-12 02:25:49,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-12 02:25:49,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-12 02:25:49,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:49,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-12 02:25:49,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,979 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-12 02:25:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-12 02:25:49,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:49,985 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-12 02:25:49,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-12 02:25:49,986 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-12 02:25:49,986 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-12 02:25:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:49,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:25:49,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:49,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-12 02:25:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099104450] [2023-11-12 02:25:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:50,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099104450] [2023-11-12 02:25:50,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099104450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:50,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:50,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356802579] [2023-11-12 02:25:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:50,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:50,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-12 02:25:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-12 02:25:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:50,250 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-12 02:25:50,250 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-11-12 02:25:50,252 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-12 02:25:50,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-12 02:25:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-12 02:25:50,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-12 02:25:50,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-12 02:25:50,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-12 02:25:50,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:50,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-12 02:25:50,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,261 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-12 02:25:50,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-12 02:25:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:50,262 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-12 02:25:50,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-12 02:25:50,264 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-12 02:25:50,264 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-12 02:25:50,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:50,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:25:50,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:50,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:50,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-12 02:25:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217820597] [2023-11-12 02:25:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217820597] [2023-11-12 02:25:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217820597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:50,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511998100] [2023-11-12 02:25:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:50,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-12 02:25:50,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:50,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-12 02:25:50,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:50,616 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-12 02:25:50,616 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:50,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-11-12 02:25:50,623 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-12 02:25:50,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-12 02:25:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:25:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-12 02:25:50,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-12 02:25:50,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-12 02:25:50,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-12 02:25:50,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:50,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-12 02:25:50,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,635 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-12 02:25:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-12 02:25:50,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:50,640 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-12 02:25:50,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-12 02:25:50,642 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-12 02:25:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-12 02:25:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:50,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:50,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:50,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-12 02:25:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167069781] [2023-11-12 02:25:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167069781] [2023-11-12 02:25:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167069781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:50,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142914781] [2023-11-12 02:25:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:50,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:50,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-12 02:25:50,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:50,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-12 02:25:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:51,051 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-12 02:25:51,052 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-12 02:25:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-11-12 02:25:51,054 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-12 02:25:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-12 02:25:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-12 02:25:51,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-12 02:25:51,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-12 02:25:51,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-12 02:25:51,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:51,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-12 02:25:51,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,061 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-12 02:25:51,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-12 02:25:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:51,064 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-12 02:25:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-12 02:25:51,065 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-12 02:25:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-12 02:25:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:51,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:51,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-12 02:25:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43950934] [2023-11-12 02:25:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43950934] [2023-11-12 02:25:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43950934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:51,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:51,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607462670] [2023-11-12 02:25:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:51,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:51,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:51,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:51,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:51,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:51,275 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-12 02:25:51,275 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-12 02:25:51,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-11-12 02:25:51,277 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-12 02:25:51,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-12 02:25:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-12 02:25:51,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-12 02:25:51,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-12 02:25:51,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-12 02:25:51,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:51,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-12 02:25:51,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,285 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-12 02:25:51,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-12 02:25:51,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:51,288 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-12 02:25:51,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-12 02:25:51,289 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-12 02:25:51,289 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-12 02:25:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:51,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:25:51,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:51,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-12 02:25:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714397785] [2023-11-12 02:25:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:51,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714397785] [2023-11-12 02:25:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714397785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107233403] [2023-11-12 02:25:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:51,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:51,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:51,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:51,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:51,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:51,534 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-12 02:25:51,535 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-12 02:25:51,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-11-12 02:25:51,537 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-12 02:25:51,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-12 02:25:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-12 02:25:51,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-12 02:25:51,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-12 02:25:51,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-12 02:25:51,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:51,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-12 02:25:51,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,554 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,554 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-12 02:25:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-12 02:25:51,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:51,560 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-12 02:25:51,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-12 02:25:51,562 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-12 02:25:51,563 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-12 02:25:51,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:51,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:51,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:51,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:51,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-12 02:25:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248607580] [2023-11-12 02:25:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:51,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248607580] [2023-11-12 02:25:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248607580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:51,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:51,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597605133] [2023-11-12 02:25:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:51,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:51,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:51,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:51,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:51,834 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-12 02:25:51,834 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-12 02:25:51,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 762. Up to 84 conditions per place. [2023-11-12 02:25:51,837 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-11-12 02:25:51,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-11-12 02:25:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:25:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-12 02:25:51,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407185628742515 [2023-11-12 02:25:51,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-12 02:25:51,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-12 02:25:51,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:51,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-12 02:25:51,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,845 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 368 transitions. [2023-11-12 02:25:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-11-12 02:25:51,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:51,854 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-11-12 02:25:51,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-12 02:25:51,858 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-11-12 02:25:51,858 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-11-12 02:25:51,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:51,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:51,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:51,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:51,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-12 02:25:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278453425] [2023-11-12 02:25:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278453425] [2023-11-12 02:25:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278453425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717830912] [2023-11-12 02:25:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:52,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:52,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:52,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:52,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:52,194 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-12 02:25:52,194 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-12 02:25:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 263 events. 150/263 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 864 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1079. Up to 73 conditions per place. [2023-11-12 02:25:52,198 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-11-12 02:25:52,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-11-12 02:25:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:25:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-12 02:25:52,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-12 02:25:52,202 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-12 02:25:52,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-12 02:25:52,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:52,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-12 02:25:52,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,208 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,209 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 582 transitions. [2023-11-12 02:25:52,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-11-12 02:25:52,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:52,214 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-11-12 02:25:52,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-12 02:25:52,215 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-11-12 02:25:52,216 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-11-12 02:25:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:52,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:52,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:52,217 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-12 02:25:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417455108] [2023-11-12 02:25:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:52,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:52,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417455108] [2023-11-12 02:25:52,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417455108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:52,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506243072] [2023-11-12 02:25:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:52,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:52,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:52,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:52,533 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-11-12 02:25:52,534 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-11-12 02:25:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 255 events. 146/255 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 844 event pairs, 18 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1193. Up to 75 conditions per place. [2023-11-12 02:25:52,537 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-11-12 02:25:52,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 603 flow [2023-11-12 02:25:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:25:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 581 transitions. [2023-11-12 02:25:52,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488023952095806 [2023-11-12 02:25:52,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 581 transitions. [2023-11-12 02:25:52,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 581 transitions. [2023-11-12 02:25:52,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:52,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 581 transitions. [2023-11-12 02:25:52,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.625) internal successors, (581), 8 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) [2023-11-12 02:25:52,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,547 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,548 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 8 states and 581 transitions. [2023-11-12 02:25:52,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 603 flow [2023-11-12 02:25:52,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 552 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-12 02:25:52,557 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 396 flow [2023-11-12 02:25:52,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2023-11-12 02:25:52,559 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2023-11-12 02:25:52,559 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 396 flow [2023-11-12 02:25:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:52,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:52,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:52,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:52,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash 726265661, now seen corresponding path program 3 times [2023-11-12 02:25:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978771214] [2023-11-12 02:25:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:52,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978771214] [2023-11-12 02:25:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978771214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277734966] [2023-11-12 02:25:52,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:25:52,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:52,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:52,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:52,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:52,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 02:25:52,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:52,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:25:52,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:52,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:53,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277734966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:53,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:53,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-12 02:25:53,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103462373] [2023-11-12 02:25:53,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:25:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:53,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:25:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:25:53,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:53,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:53,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:53,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:53,372 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-11-12 02:25:53,372 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-11-12 02:25:53,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 303 events. 170/303 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 994 event pairs, 35 based on Foata normal form. 24/327 useless extension candidates. Maximal degree in co-relation 1500. Up to 161 conditions per place. [2023-11-12 02:25:53,376 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-11-12 02:25:53,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 818 flow [2023-11-12 02:25:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:25:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:25:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 869 transitions. [2023-11-12 02:25:53,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363273453093815 [2023-11-12 02:25:53,380 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 869 transitions. [2023-11-12 02:25:53,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 869 transitions. [2023-11-12 02:25:53,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:53,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 869 transitions. [2023-11-12 02:25:53,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.41666666666667) internal successors, (869), 12 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,391 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,391 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 396 flow. Second operand 12 states and 869 transitions. [2023-11-12 02:25:53,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 818 flow [2023-11-12 02:25:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 769 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:53,402 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 507 flow [2023-11-12 02:25:53,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=507, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2023-11-12 02:25:53,403 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2023-11-12 02:25:53,403 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 507 flow [2023-11-12 02:25:53,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:53,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:53,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:53,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:25:53,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:53,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash 748608911, now seen corresponding path program 4 times [2023-11-12 02:25:53,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:53,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957046425] [2023-11-12 02:25:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:53,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957046425] [2023-11-12 02:25:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957046425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807618971] [2023-11-12 02:25:53,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:25:53,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:53,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:53,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:53,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:25:53,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:53,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:25:53,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:53,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807618971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:54,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 02:25:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412140599] [2023-11-12 02:25:54,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:25:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:25:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:54,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 507 flow. Second operand has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:54,546 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-11-12 02:25:54,546 INFO L125 PetriNetUnfolderBase]: For 6604/6604 co-relation queries the response was YES. [2023-11-12 02:25:54,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 439 events. 244/439 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1683 event pairs, 28 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2508. Up to 134 conditions per place. [2023-11-12 02:25:54,551 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-11-12 02:25:54,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1396 flow [2023-11-12 02:25:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-12 02:25:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-12 02:25:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1303 transitions. [2023-11-12 02:25:54,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334664005322688 [2023-11-12 02:25:54,557 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1303 transitions. [2023-11-12 02:25:54,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1303 transitions. [2023-11-12 02:25:54,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:54,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1303 transitions. [2023-11-12 02:25:54,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.38888888888889) internal successors, (1303), 18 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,570 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,570 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 507 flow. Second operand 18 states and 1303 transitions. [2023-11-12 02:25:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1396 flow [2023-11-12 02:25:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 1282 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:54,590 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 912 flow [2023-11-12 02:25:54,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=912, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2023-11-12 02:25:54,591 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-11-12 02:25:54,591 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 912 flow [2023-11-12 02:25:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:54,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:54,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:54,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:54,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1875041737, now seen corresponding path program 5 times [2023-11-12 02:25:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396824383] [2023-11-12 02:25:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396824383] [2023-11-12 02:25:54,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396824383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839863679] [2023-11-12 02:25:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:25:54,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:54,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:54,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:25:55,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:25:55,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:55,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:25:55,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:55,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839863679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:55,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:25:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300898565] [2023-11-12 02:25:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:55,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:25:55,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:25:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:25:55,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:55,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 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) [2023-11-12 02:25:55,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:55,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:55,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:55,720 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-11-12 02:25:55,720 INFO L125 PetriNetUnfolderBase]: For 16186/16186 co-relation queries the response was YES. [2023-11-12 02:25:55,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 599 events. 328/599 cut-off events. For 16186/16186 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2509 event pairs, 27 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4500. Up to 210 conditions per place. [2023-11-12 02:25:55,729 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-11-12 02:25:55,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2191 flow [2023-11-12 02:25:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-12 02:25:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-12 02:25:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1298 transitions. [2023-11-12 02:25:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318030605455755 [2023-11-12 02:25:55,735 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1298 transitions. [2023-11-12 02:25:55,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1298 transitions. [2023-11-12 02:25:55,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:55,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1298 transitions. [2023-11-12 02:25:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.11111111111111) internal successors, (1298), 18 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,750 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,750 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 912 flow. Second operand 18 states and 1298 transitions. [2023-11-12 02:25:55,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2191 flow [2023-11-12 02:25:55,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 1901 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-11-12 02:25:55,791 INFO L231 Difference]: Finished difference. Result has 114 places, 80 transitions, 1286 flow [2023-11-12 02:25:55,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1286, PETRI_PLACES=114, PETRI_TRANSITIONS=80} [2023-11-12 02:25:55,792 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-11-12 02:25:55,793 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 1286 flow [2023-11-12 02:25:55,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 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) [2023-11-12 02:25:55,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:55,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:55,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:56,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:56,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:56,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1892921323, now seen corresponding path program 6 times [2023-11-12 02:25:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291305665] [2023-11-12 02:25:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:56,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291305665] [2023-11-12 02:25:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291305665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060704453] [2023-11-12 02:25:56,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-12 02:25:56,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:56,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:56,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:56,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:25:56,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-12 02:25:56,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:56,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:25:56,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:56,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060704453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:56,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-12 02:25:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971974442] [2023-11-12 02:25:56,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:25:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:25:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:25:56,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:56,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 1286 flow. Second operand has 15 states, 15 states have (on average 68.73333333333333) internal successors, (1031), 15 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:56,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:56,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:57,025 INFO L124 PetriNetUnfolderBase]: 380/691 cut-off events. [2023-11-12 02:25:57,026 INFO L125 PetriNetUnfolderBase]: For 28377/28377 co-relation queries the response was YES. [2023-11-12 02:25:57,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5913 conditions, 691 events. 380/691 cut-off events. For 28377/28377 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2945 event pairs, 12 based on Foata normal form. 24/715 useless extension candidates. Maximal degree in co-relation 5864. Up to 239 conditions per place. [2023-11-12 02:25:57,036 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 45 selfloop transitions, 82 changer transitions 36/163 dead transitions. [2023-11-12 02:25:57,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 163 transitions, 2974 flow [2023-11-12 02:25:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:25:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-12 02:25:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1518 transitions. [2023-11-12 02:25:57,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328485885372113 [2023-11-12 02:25:57,046 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1518 transitions. [2023-11-12 02:25:57,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1518 transitions. [2023-11-12 02:25:57,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:57,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1518 transitions. [2023-11-12 02:25:57,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 72.28571428571429) internal successors, (1518), 21 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 167.0) internal successors, (3674), 22 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,065 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 167.0) internal successors, (3674), 22 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,065 INFO L175 Difference]: Start difference. First operand has 114 places, 80 transitions, 1286 flow. Second operand 21 states and 1518 transitions. [2023-11-12 02:25:57,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 163 transitions, 2974 flow [2023-11-12 02:25:57,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 163 transitions, 2394 flow, removed 255 selfloop flow, removed 12 redundant places. [2023-11-12 02:25:57,133 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 1684 flow [2023-11-12 02:25:57,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1684, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-11-12 02:25:57,134 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2023-11-12 02:25:57,134 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 1684 flow [2023-11-12 02:25:57,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.73333333333333) internal successors, (1031), 15 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:57,135 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:57,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:57,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:57,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1884854321, now seen corresponding path program 7 times [2023-11-12 02:25:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777324409] [2023-11-12 02:25:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777324409] [2023-11-12 02:25:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777324409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958200306] [2023-11-12 02:25:57,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 02:25:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:57,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:57,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:25:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:57,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:25:57,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:57,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958200306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:57,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-12 02:25:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889014600] [2023-11-12 02:25:57,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-12 02:25:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-12 02:25:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-12 02:25:58,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:25:58,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 1684 flow. Second operand has 22 states, 22 states have (on average 68.5) internal successors, (1507), 22 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:58,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:25:58,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:59,050 INFO L124 PetriNetUnfolderBase]: 528/939 cut-off events. [2023-11-12 02:25:59,051 INFO L125 PetriNetUnfolderBase]: For 44765/44765 co-relation queries the response was YES. [2023-11-12 02:25:59,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 939 events. 528/939 cut-off events. For 44765/44765 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3986 event pairs, 15 based on Foata normal form. 36/975 useless extension candidates. Maximal degree in co-relation 8722. Up to 331 conditions per place. [2023-11-12 02:25:59,065 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 60 selfloop transitions, 119 changer transitions 66/245 dead transitions. [2023-11-12 02:25:59,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 245 transitions, 4946 flow [2023-11-12 02:25:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-12 02:25:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-12 02:25:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2594 transitions. [2023-11-12 02:25:59,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314703925482369 [2023-11-12 02:25:59,073 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2594 transitions. [2023-11-12 02:25:59,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2594 transitions. [2023-11-12 02:25:59,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:59,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2594 transitions. [2023-11-12 02:25:59,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.05555555555556) internal successors, (2594), 36 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:59,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:59,101 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:59,101 INFO L175 Difference]: Start difference. First operand has 132 places, 99 transitions, 1684 flow. Second operand 36 states and 2594 transitions. [2023-11-12 02:25:59,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 245 transitions, 4946 flow [2023-11-12 02:25:59,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 245 transitions, 4324 flow, removed 274 selfloop flow, removed 14 redundant places. [2023-11-12 02:25:59,210 INFO L231 Difference]: Finished difference. Result has 171 places, 136 transitions, 2732 flow [2023-11-12 02:25:59,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2732, PETRI_PLACES=171, PETRI_TRANSITIONS=136} [2023-11-12 02:25:59,212 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2023-11-12 02:25:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 136 transitions, 2732 flow [2023-11-12 02:25:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 68.5) internal successors, (1507), 22 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:59,214 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:59,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:59,419 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:25:59,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -92387390, now seen corresponding path program 8 times [2023-11-12 02:25:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:59,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798120223] [2023-11-12 02:25:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:59,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798120223] [2023-11-12 02:25:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798120223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537585430] [2023-11-12 02:25:59,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:25:59,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:59,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:59,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:25:59,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:25:59,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:59,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:25:59,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:59,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537585430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:00,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-11-12 02:26:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090473984] [2023-11-12 02:26:00,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-12 02:26:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-12 02:26:00,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-11-12 02:26:00,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:26:00,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 136 transitions, 2732 flow. Second operand has 34 states, 34 states have (on average 68.32352941176471) internal successors, (2323), 34 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:00,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:00,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:26:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:01,759 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-11-12 02:26:01,760 INFO L125 PetriNetUnfolderBase]: For 93229/93229 co-relation queries the response was YES. [2023-11-12 02:26:01,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14049 conditions, 1211 events. 664/1211 cut-off events. For 93229/93229 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5484 event pairs, 105 based on Foata normal form. 24/1235 useless extension candidates. Maximal degree in co-relation 13979. Up to 467 conditions per place. [2023-11-12 02:26:01,782 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 113 selfloop transitions, 98 changer transitions 71/282 dead transitions. [2023-11-12 02:26:01,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 282 transitions, 7029 flow [2023-11-12 02:26:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-12 02:26:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-12 02:26:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2717 transitions. [2023-11-12 02:26:01,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281437125748503 [2023-11-12 02:26:01,789 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2717 transitions. [2023-11-12 02:26:01,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2717 transitions. [2023-11-12 02:26:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:01,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2717 transitions. [2023-11-12 02:26:01,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 71.5) internal successors, (2717), 38 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 167.0) internal successors, (6513), 39 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,827 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 167.0) internal successors, (6513), 39 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,827 INFO L175 Difference]: Start difference. First operand has 171 places, 136 transitions, 2732 flow. Second operand 38 states and 2717 transitions. [2023-11-12 02:26:01,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 282 transitions, 7029 flow [2023-11-12 02:26:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 282 transitions, 5427 flow, removed 777 selfloop flow, removed 12 redundant places. [2023-11-12 02:26:02,077 INFO L231 Difference]: Finished difference. Result has 204 places, 170 transitions, 3017 flow [2023-11-12 02:26:02,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3017, PETRI_PLACES=204, PETRI_TRANSITIONS=170} [2023-11-12 02:26:02,078 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 180 predicate places. [2023-11-12 02:26:02,078 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 170 transitions, 3017 flow [2023-11-12 02:26:02,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 68.32352941176471) internal successors, (2323), 34 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:02,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:02,080 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:02,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:26:02,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:26:02,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1807625914, now seen corresponding path program 9 times [2023-11-12 02:26:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455047701] [2023-11-12 02:26:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:02,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455047701] [2023-11-12 02:26:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455047701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981790989] [2023-11-12 02:26:02,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:26:02,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:02,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:02,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:26:02,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-12 02:26:02,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:02,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:26:02,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:02,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981790989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:03,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:03,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-12 02:26:03,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955841356] [2023-11-12 02:26:03,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-12 02:26:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:03,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-12 02:26:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:26:03,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:26:03,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 170 transitions, 3017 flow. Second operand has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:03,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:26:03,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:05,112 INFO L124 PetriNetUnfolderBase]: 852/1575 cut-off events. [2023-11-12 02:26:05,113 INFO L125 PetriNetUnfolderBase]: For 154003/154003 co-relation queries the response was YES. [2023-11-12 02:26:05,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17959 conditions, 1575 events. 852/1575 cut-off events. For 154003/154003 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7672 event pairs, 34 based on Foata normal form. 32/1607 useless extension candidates. Maximal degree in co-relation 17884. Up to 643 conditions per place. [2023-11-12 02:26:05,144 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 83 selfloop transitions, 184 changer transitions 83/350 dead transitions. [2023-11-12 02:26:05,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 350 transitions, 7776 flow [2023-11-12 02:26:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-12 02:26:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-12 02:26:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3156 transitions. [2023-11-12 02:26:05,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295046271094175 [2023-11-12 02:26:05,155 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3156 transitions. [2023-11-12 02:26:05,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3156 transitions. [2023-11-12 02:26:05,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:05,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3156 transitions. [2023-11-12 02:26:05,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.72727272727273) internal successors, (3156), 44 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,184 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,185 INFO L175 Difference]: Start difference. First operand has 204 places, 170 transitions, 3017 flow. Second operand 44 states and 3156 transitions. [2023-11-12 02:26:05,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 350 transitions, 7776 flow [2023-11-12 02:26:05,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 350 transitions, 7122 flow, removed 262 selfloop flow, removed 17 redundant places. [2023-11-12 02:26:05,488 INFO L231 Difference]: Finished difference. Result has 243 places, 219 transitions, 4324 flow [2023-11-12 02:26:05,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2551, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4324, PETRI_PLACES=243, PETRI_TRANSITIONS=219} [2023-11-12 02:26:05,490 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2023-11-12 02:26:05,490 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 219 transitions, 4324 flow [2023-11-12 02:26:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:05,491 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:05,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:26:05,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:26:05,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1494720574, now seen corresponding path program 10 times [2023-11-12 02:26:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:05,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291829386] [2023-11-12 02:26:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:06,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291829386] [2023-11-12 02:26:06,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291829386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:06,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154486139] [2023-11-12 02:26:06,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:26:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:06,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:06,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:26:06,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:26:06,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:06,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:26:06,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154486139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:06,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-12 02:26:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148729326] [2023-11-12 02:26:06,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-12 02:26:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:06,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-12 02:26:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:26:06,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:26:06,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 219 transitions, 4324 flow. Second operand has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:06,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:26:06,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:08,621 INFO L124 PetriNetUnfolderBase]: 964/1775 cut-off events. [2023-11-12 02:26:08,621 INFO L125 PetriNetUnfolderBase]: For 245545/245545 co-relation queries the response was YES. [2023-11-12 02:26:08,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 1775 events. 964/1775 cut-off events. For 245545/245545 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8791 event pairs, 12 based on Foata normal form. 36/1811 useless extension candidates. Maximal degree in co-relation 22637. Up to 731 conditions per place. [2023-11-12 02:26:08,642 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 69 selfloop transitions, 230 changer transitions 81/380 dead transitions. [2023-11-12 02:26:08,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 380 transitions, 9408 flow [2023-11-12 02:26:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-12 02:26:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-12 02:26:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3163 transitions. [2023-11-12 02:26:08,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304572672836146 [2023-11-12 02:26:08,650 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3163 transitions. [2023-11-12 02:26:08,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3163 transitions. [2023-11-12 02:26:08,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:08,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3163 transitions. [2023-11-12 02:26:08,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.88636363636364) internal successors, (3163), 44 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,673 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,674 INFO L175 Difference]: Start difference. First operand has 243 places, 219 transitions, 4324 flow. Second operand 44 states and 3163 transitions. [2023-11-12 02:26:08,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 380 transitions, 9408 flow [2023-11-12 02:26:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 380 transitions, 8506 flow, removed 364 selfloop flow, removed 18 redundant places. [2023-11-12 02:26:09,127 INFO L231 Difference]: Finished difference. Result has 282 places, 249 transitions, 5390 flow [2023-11-12 02:26:09,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5390, PETRI_PLACES=282, PETRI_TRANSITIONS=249} [2023-11-12 02:26:09,127 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 258 predicate places. [2023-11-12 02:26:09,127 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 249 transitions, 5390 flow [2023-11-12 02:26:09,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:09,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:09,129 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:09,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:09,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:26:09,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:26:09,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:09,335 INFO L85 PathProgramCache]: Analyzing trace with hash 841810370, now seen corresponding path program 11 times [2023-11-12 02:26:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102591692] [2023-11-12 02:26:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:09,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102591692] [2023-11-12 02:26:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102591692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431431975] [2023-11-12 02:26:09,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:26:09,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:09,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:09,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:26:09,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-12 02:26:09,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:09,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 02:26:09,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:10,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431431975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:10,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-11-12 02:26:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067877091] [2023-11-12 02:26:10,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-12 02:26:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-12 02:26:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2023-11-12 02:26:10,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:26:10,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 249 transitions, 5390 flow. Second operand has 40 states, 40 states have (on average 68.275) internal successors, (2731), 40 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:10,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:10,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:26:10,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:12,621 INFO L124 PetriNetUnfolderBase]: 1060/1947 cut-off events. [2023-11-12 02:26:12,622 INFO L125 PetriNetUnfolderBase]: For 379691/379691 co-relation queries the response was YES. [2023-11-12 02:26:12,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 1947 events. 1060/1947 cut-off events. For 379691/379691 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9697 event pairs, 17 based on Foata normal form. 28/1975 useless extension candidates. Maximal degree in co-relation 28517. Up to 791 conditions per place. [2023-11-12 02:26:12,654 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 80 selfloop transitions, 252 changer transitions 90/422 dead transitions. [2023-11-12 02:26:12,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 422 transitions, 11967 flow [2023-11-12 02:26:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-12 02:26:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-12 02:26:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3449 transitions. [2023-11-12 02:26:12,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43026447105788423 [2023-11-12 02:26:12,661 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3449 transitions. [2023-11-12 02:26:12,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3449 transitions. [2023-11-12 02:26:12,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:12,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3449 transitions. [2023-11-12 02:26:12,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 71.85416666666667) internal successors, (3449), 48 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:12,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:12,684 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:12,684 INFO L175 Difference]: Start difference. First operand has 282 places, 249 transitions, 5390 flow. Second operand 48 states and 3449 transitions. [2023-11-12 02:26:12,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 422 transitions, 11967 flow [2023-11-12 02:26:13,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 422 transitions, 10188 flow, removed 747 selfloop flow, removed 28 redundant places. [2023-11-12 02:26:13,521 INFO L231 Difference]: Finished difference. Result has 313 places, 273 transitions, 5957 flow [2023-11-12 02:26:13,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5957, PETRI_PLACES=313, PETRI_TRANSITIONS=273} [2023-11-12 02:26:13,523 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 289 predicate places. [2023-11-12 02:26:13,523 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 273 transitions, 5957 flow [2023-11-12 02:26:13,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 68.275) internal successors, (2731), 40 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:13,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:13,524 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:13,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:13,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:13,727 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:26:13,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1208372604, now seen corresponding path program 12 times [2023-11-12 02:26:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733354783] [2023-11-12 02:26:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:13,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733354783] [2023-11-12 02:26:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733354783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436469389] [2023-11-12 02:26:14,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-12 02:26:14,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:14,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:14,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:14,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:26:14,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-12 02:26:14,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:14,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-12 02:26:14,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:14,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436469389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:14,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:14,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-11-12 02:26:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926277732] [2023-11-12 02:26:14,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:14,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 02:26:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 02:26:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:26:14,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-12 02:26:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 273 transitions, 5957 flow. Second operand has 25 states, 25 states have (on average 68.2) internal successors, (1705), 25 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:14,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-12 02:26:14,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:16,642 INFO L124 PetriNetUnfolderBase]: 1088/1995 cut-off events. [2023-11-12 02:26:16,643 INFO L125 PetriNetUnfolderBase]: For 432459/432459 co-relation queries the response was YES. [2023-11-12 02:26:16,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30701 conditions, 1995 events. 1088/1995 cut-off events. For 432459/432459 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9882 event pairs, 20 based on Foata normal form. 4/1999 useless extension candidates. Maximal degree in co-relation 30588. Up to 795 conditions per place. [2023-11-12 02:26:16,685 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 80 selfloop transitions, 249 changer transitions 78/407 dead transitions. [2023-11-12 02:26:16,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 407 transitions, 11219 flow [2023-11-12 02:26:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-12 02:26:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-12 02:26:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3015 transitions. [2023-11-12 02:26:16,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298545765611634 [2023-11-12 02:26:16,691 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3015 transitions. [2023-11-12 02:26:16,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3015 transitions. [2023-11-12 02:26:16,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:16,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3015 transitions. [2023-11-12 02:26:16,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 71.78571428571429) internal successors, (3015), 42 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:16,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 167.0) internal successors, (7181), 43 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:16,711 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 167.0) internal successors, (7181), 43 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:16,711 INFO L175 Difference]: Start difference. First operand has 313 places, 273 transitions, 5957 flow. Second operand 42 states and 3015 transitions. [2023-11-12 02:26:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 407 transitions, 11219 flow [2023-11-12 02:26:17,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 407 transitions, 9308 flow, removed 774 selfloop flow, removed 34 redundant places. [2023-11-12 02:26:17,922 INFO L231 Difference]: Finished difference. Result has 324 places, 280 transitions, 5412 flow [2023-11-12 02:26:17,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5412, PETRI_PLACES=324, PETRI_TRANSITIONS=280} [2023-11-12 02:26:17,923 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 300 predicate places. [2023-11-12 02:26:17,923 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 280 transitions, 5412 flow [2023-11-12 02:26:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 68.2) internal successors, (1705), 25 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:17,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:17,923 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:17,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:18,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:18,137 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:26:18,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 735830513, now seen corresponding path program 13 times [2023-11-12 02:26:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812745918] [2023-11-12 02:26:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:26:18,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:26:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:26:18,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:26:18,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:26:18,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-12 02:26:18,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-12 02:26:18,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-12 02:26:18,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-12 02:26:18,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-12 02:26:18,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-12 02:26:18,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-12 02:26:18,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-12 02:26:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:26:18,249 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:18,254 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:26:18,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:26:18,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-12 02:26:18,316 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-12 02:26:18,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:26:18 BasicIcfg [2023-11-12 02:26:18,334 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:26:18,336 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:26:18,336 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:26:18,337 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:26:18,337 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:46" (3/4) ... [2023-11-12 02:26:18,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:26:18,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:26:18,341 INFO L158 Benchmark]: Toolchain (without parser) took 33461.29ms. Allocated memory was 140.5MB in the beginning and 690.0MB in the end (delta: 549.5MB). Free memory was 93.4MB in the beginning and 416.1MB in the end (delta: -322.7MB). Peak memory consumption was 228.8MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,341 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory was 111.0MB in the beginning and 110.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:18,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 674.03ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 73.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.47ms. Allocated memory is still 140.5MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,343 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,343 INFO L158 Benchmark]: RCFGBuilder took 450.95ms. Allocated memory is still 140.5MB. Free memory was 70.3MB in the beginning and 56.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,343 INFO L158 Benchmark]: TraceAbstraction took 32217.31ms. Allocated memory was 140.5MB in the beginning and 690.0MB in the end (delta: 549.5MB). Free memory was 56.1MB in the beginning and 416.1MB in the end (delta: -359.9MB). Peak memory consumption was 191.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:18,344 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 690.0MB. Free memory is still 416.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:18,346 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory was 111.0MB in the beginning and 110.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 674.03ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 73.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.47ms. Allocated memory is still 140.5MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.95ms. Allocated memory is still 140.5MB. Free memory was 70.3MB in the beginning and 56.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32217.31ms. Allocated memory was 140.5MB in the beginning and 690.0MB in the end (delta: 549.5MB). Free memory was 56.1MB in the beginning and 416.1MB in the end (delta: -359.9MB). Peak memory consumption was 191.1MB. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 690.0MB. Free memory is still 416.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 81 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1366, independent conditional: 0, independent unconditional: 1366, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1395, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.9s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5027 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4813 mSDsluCounter, 1037 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 969 mSDsCounter, 472 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4704 IncrementalHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 472 mSolverCounterUnsat, 68 mSDtfsCounter, 4704 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 217 SyntacticMatches, 18 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8879 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5957occurred in iteration=19, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 2416 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 0/867 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 02:26:18,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:26:21,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:26:21,253 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:26:21,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:26:21,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:26:21,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:26:21,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:26:21,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:26:21,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:26:21,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:26:21,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:26:21,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:26:21,320 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:26:21,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:26:21,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:26:21,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:26:21,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:26:21,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:26:21,324 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:26:21,325 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:26:21,325 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:26:21,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:26:21,326 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:26:21,327 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:26:21,327 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:26:21,328 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:26:21,328 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:26:21,329 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:26:21,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:26:21,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:26:21,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:26:21,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:21,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:26:21,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:26:21,333 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:26:21,333 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:26:21,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:26:21,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:26:21,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:26:21,335 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:26:21,335 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:26:21,336 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_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-12 02:26:21,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:26:21,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:26:21,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:26:21,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:26:21,810 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:26:21,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-12 02:26:25,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:26:25,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:26:25,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-12 02:26:25,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/3305b9d1c/2e9d8cb409e440ab8e70e906bc5e8d3b/FLAG4f259d7dd [2023-11-12 02:26:25,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/data/3305b9d1c/2e9d8cb409e440ab8e70e906bc5e8d3b [2023-11-12 02:26:25,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:26:25,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:26:25,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:25,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:26:25,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:26:25,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:25" (1/1) ... [2023-11-12 02:26:25,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168e4e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:25, skipping insertion in model container [2023-11-12 02:26:25,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:25" (1/1) ... [2023-11-12 02:26:25,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:26:26,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:26,251 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:26:26,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:26,395 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:26:26,395 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:26:26,404 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:26:26,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26 WrapperNode [2023-11-12 02:26:26,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:26,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:26,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:26:26,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:26:26,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,476 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-11-12 02:26:26,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:26,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:26:26,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:26:26,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:26:26,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:26:26,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:26:26,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:26:26,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:26:26,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (1/1) ... [2023-11-12 02:26:26,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:26,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:26,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:26:26,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e9b755-68bc-44f4-8e74-6e37bba29575/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:26:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:26:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:26:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:26:26,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:26:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:26:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:26:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:26:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:26:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:26:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:26:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:26:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:26:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:26:26,634 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:26:26,869 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:26:26,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:26:27,123 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:26:27,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:26:27,130 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:26:27,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:27 BoogieIcfgContainer [2023-11-12 02:26:27,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:26:27,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:26:27,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:26:27,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:26:27,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:26:25" (1/3) ... [2023-11-12 02:26:27,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95c6bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:27, skipping insertion in model container [2023-11-12 02:26:27,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:26" (2/3) ... [2023-11-12 02:26:27,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95c6bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:27, skipping insertion in model container [2023-11-12 02:26:27,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:27" (3/3) ... [2023-11-12 02:26:27,143 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-12 02:26:27,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:26:27,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:26:27,164 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:26:27,238 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:26:27,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 174 flow [2023-11-12 02:26:27,358 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-12 02:26:27,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:27,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-12 02:26:27,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 174 flow [2023-11-12 02:26:27,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 168 flow [2023-11-12 02:26:27,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:26:27,396 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-12 02:26:27,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-12 02:26:27,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 168 flow [2023-11-12 02:26:27,445 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-12 02:26:27,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:27,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-12 02:26:27,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728