./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:37:41,738 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:37:41,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:37:41,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:37:41,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:37:41,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:37:41,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:37:41,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:37:41,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:37:41,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:37:41,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:37:41,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:37:41,849 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:37:41,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:37:41,850 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:37:41,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:37:41,851 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:37:41,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:37:41,852 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:37:41,852 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:37:41,853 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:37:41,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:37:41,858 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:37:41,858 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:37:41,859 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:37:41,859 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:37:41,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:37:41,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:37:41,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:37:41,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:37:41,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:37:41,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:37:41,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:37:41,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:37:41,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:37:41,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:37:41,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:37:41,865 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:37:41,865 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_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e
[2023-11-19 07:37:42,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:37:42,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:37:42,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:37:42,134 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:37:42,135 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:37:42,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i
[2023-11-19 07:37:45,417 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:37:45,725 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:37:45,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i
[2023-11-19 07:37:45,745 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/data/303b633a4/25cb88d295ad4f86a65baf5c59903d7e/FLAG6c2ba9f41
[2023-11-19 07:37:45,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/data/303b633a4/25cb88d295ad4f86a65baf5c59903d7e
[2023-11-19 07:37:45,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:37:45,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:37:45,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:37:45,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:37:45,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:37:45,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:45" (1/1) ...
[2023-11-19 07:37:45,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef361e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:45, skipping insertion in model container
[2023-11-19 07:37:45,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:45" (1/1) ...
[2023-11-19 07:37:45,853 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:37:46,220 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:37:46,233 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:37:46,293 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:37:46,346 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:37:46,346 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:37:46,354 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:37:46,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46 WrapperNode
[2023-11-19 07:37:46,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:37:46,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:37:46,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:37:46,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:37:46,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,439 INFO L138 Inliner]: procedures = 179, calls = 50, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 194
[2023-11-19 07:37:46,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:37:46,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:37:46,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:37:46,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:37:46,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:37:46,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:37:46,510 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:37:46,510 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:37:46,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (1/1) ...
[2023-11-19 07:37:46,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:37:46,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:37:46,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:37:46,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ac68b7-308b-4439-ba50-d642ca7a51ce/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:37:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:37:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2023-11-19 07:37:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2023-11-19 07:37:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:37:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-11-19 07:37:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:37:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:37:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:37:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:37:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-11-19 07:37:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:37:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:37:46,609 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:37:46,753 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:37:46,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:37:47,206 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:37:47,525 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:37:47,526 INFO L302 CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-19 07:37:47,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:47 BoogieIcfgContainer
[2023-11-19 07:37:47,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:37:47,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:37:47,541 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:37:47,544 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:37:47,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:45" (1/3) ...
[2023-11-19 07:37:47,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cea2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:47, skipping insertion in model container
[2023-11-19 07:37:47,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:46" (2/3) ...
[2023-11-19 07:37:47,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cea2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:47, skipping insertion in model container
[2023-11-19 07:37:47,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:47" (3/3) ...
[2023-11-19 07:37:47,549 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i
[2023-11-19 07:37:47,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:37:47,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations.
[2023-11-19 07:37:47,568 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:37:47,719 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:37:47,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,892 INFO L124 PetriNetUnfolderBase]: 14/180 cut-off events.
[2023-11-19 07:37:47,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:37:47,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 180 events. 14/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 140. Up to 4 conditions per place.
[2023-11-19 07:37:47,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:37:47,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 164 transitions, 332 flow
[2023-11-19 07:37:47,972 INFO L124 PetriNetUnfolderBase]: 14/180 cut-off events.
[2023-11-19 07:37:47,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:37:47,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 180 events. 14/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 140. Up to 4 conditions per place.
[2023-11-19 07:37:47,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 4636
[2023-11-19 07:37:55,364 INFO L134 LiptonReduction]: Checked pairs total: 10333
[2023-11-19 07:37:55,364 INFO L136 LiptonReduction]: Total number of compositions: 168
[2023-11-19 07:37:55,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:37:55,386 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;@420a948c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:37:55,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations.
[2023-11-19 07:37:55,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:37:55,389 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events.
[2023-11-19 07:37:55,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:37:55,389 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:55,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:37:55,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:55,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash 33716, now seen corresponding path program 1 times
[2023-11-19 07:37:55,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:55,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473568785]
[2023-11-19 07:37:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:55,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473568785]
[2023-11-19 07:37:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473568785] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:55,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:37:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778514896]
[2023-11-19 07:37:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:37:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:37:55,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:55,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 332
[2023-11-19 07:37:55,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:55,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:55,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 332
[2023-11-19 07:37:55,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:56,118 INFO L124 PetriNetUnfolderBase]: 239/532 cut-off events.
[2023-11-19 07:37:56,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:37:56,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 532 events. 239/532 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2383 event pairs, 122 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 1027. Up to 274 conditions per place.
[2023-11-19 07:37:56,131 INFO L140 encePairwiseOnDemand]: 308/332 looper letters, 76 selfloop transitions, 4 changer transitions 0/82 dead transitions.
[2023-11-19 07:37:56,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 328 flow
[2023-11-19 07:37:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:37:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:37:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions.
[2023-11-19 07:37:56,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42570281124497994
[2023-11-19 07:37:56,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions.
[2023-11-19 07:37:56,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions.
[2023-11-19 07:37:56,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:56,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions.
[2023-11-19 07:37:56,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,172 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 146 flow. Second operand 3 states and 424 transitions.
[2023-11-19 07:37:56,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 328 flow
[2023-11-19 07:37:56,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:37:56,179 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 132 flow
[2023-11-19 07:37:56,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=52}
[2023-11-19 07:37:56,185 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -16 predicate places.
[2023-11-19 07:37:56,185 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 132 flow
[2023-11-19 07:37:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,186 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:56,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:37:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:37:56,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:56,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 33717, now seen corresponding path program 1 times
[2023-11-19 07:37:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937207970]
[2023-11-19 07:37:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937207970]
[2023-11-19 07:37:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937207970] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:56,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:37:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88400824]
[2023-11-19 07:37:56,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:56,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:37:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:56,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:37:56,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:37:56,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 332
[2023-11-19 07:37:56,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:56,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 332
[2023-11-19 07:37:56,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:56,498 INFO L124 PetriNetUnfolderBase]: 172/402 cut-off events.
[2023-11-19 07:37:56,499 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES.
[2023-11-19 07:37:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 402 events. 172/402 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1697 event pairs, 120 based on Foata normal form. 61/319 useless extension candidates. Maximal degree in co-relation 905. Up to 385 conditions per place.
[2023-11-19 07:37:56,503 INFO L140 encePairwiseOnDemand]: 330/332 looper letters, 48 selfloop transitions, 1 changer transitions 0/51 dead transitions.
[2023-11-19 07:37:56,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 228 flow
[2023-11-19 07:37:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:37:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:37:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions.
[2023-11-19 07:37:56,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37248995983935745
[2023-11-19 07:37:56,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions.
[2023-11-19 07:37:56,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions.
[2023-11-19 07:37:56,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:56,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions.
[2023-11-19 07:37:56,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,515 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 132 flow. Second operand 3 states and 371 transitions.
[2023-11-19 07:37:56,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 228 flow
[2023-11-19 07:37:56,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:37:56,519 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 124 flow
[2023-11-19 07:37:56,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=51}
[2023-11-19 07:37:56,521 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -17 predicate places.
[2023-11-19 07:37:56,521 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 124 flow
[2023-11-19 07:37:56,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,522 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:56,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:37:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:37:56,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:56,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash 32427644, now seen corresponding path program 1 times
[2023-11-19 07:37:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894832904]
[2023-11-19 07:37:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:56,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:56,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894832904]
[2023-11-19 07:37:56,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894832904] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:56,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:56,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:37:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96904120]
[2023-11-19 07:37:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:56,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:56,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:56,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 332
[2023-11-19 07:37:56,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:56,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 332
[2023-11-19 07:37:56,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:56,950 INFO L124 PetriNetUnfolderBase]: 162/375 cut-off events.
[2023-11-19 07:37:56,950 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES.
[2023-11-19 07:37:56,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 375 events. 162/375 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1522 event pairs, 111 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 831. Up to 360 conditions per place.
[2023-11-19 07:37:56,953 INFO L140 encePairwiseOnDemand]: 328/332 looper letters, 45 selfloop transitions, 1 changer transitions 0/48 dead transitions.
[2023-11-19 07:37:56,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 210 flow
[2023-11-19 07:37:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:37:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:37:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions.
[2023-11-19 07:37:56,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684738955823293
[2023-11-19 07:37:56,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions.
[2023-11-19 07:37:56,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions.
[2023-11-19 07:37:56,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:56,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions.
[2023-11-19 07:37:56,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,963 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 124 flow. Second operand 3 states and 367 transitions.
[2023-11-19 07:37:56,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 210 flow
[2023-11-19 07:37:56,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:37:56,966 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 119 flow
[2023-11-19 07:37:56,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=48}
[2023-11-19 07:37:56,967 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places.
[2023-11-19 07:37:56,967 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 119 flow
[2023-11-19 07:37:56,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:56,968 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:56,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:37:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:37:56,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:56,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 32427519, now seen corresponding path program 1 times
[2023-11-19 07:37:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:56,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803502606]
[2023-11-19 07:37:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:56,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803502606]
[2023-11-19 07:37:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803502606] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:57,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:37:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772570636]
[2023-11-19 07:37:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:57,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:57,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 332
[2023-11-19 07:37:57,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:57,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 332
[2023-11-19 07:37:57,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:57,439 INFO L124 PetriNetUnfolderBase]: 158/364 cut-off events.
[2023-11-19 07:37:57,439 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES.
[2023-11-19 07:37:57,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 364 events. 158/364 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1448 event pairs, 107 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 808. Up to 350 conditions per place.
[2023-11-19 07:37:57,442 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 43 selfloop transitions, 1 changer transitions 0/46 dead transitions.
[2023-11-19 07:37:57,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 203 flow
[2023-11-19 07:37:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:37:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:37:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions.
[2023-11-19 07:37:57,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38052208835341367
[2023-11-19 07:37:57,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions.
[2023-11-19 07:37:57,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions.
[2023-11-19 07:37:57,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:57,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions.
[2023-11-19 07:37:57,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,452 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 119 flow. Second operand 3 states and 379 transitions.
[2023-11-19 07:37:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 203 flow
[2023-11-19 07:37:57,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:37:57,456 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 116 flow
[2023-11-19 07:37:57,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=46}
[2023-11-19 07:37:57,459 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -20 predicate places.
[2023-11-19 07:37:57,460 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 116 flow
[2023-11-19 07:37:57,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,461 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:57,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:37:57,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:37:57,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:57,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 32427518, now seen corresponding path program 1 times
[2023-11-19 07:37:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194744852]
[2023-11-19 07:37:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:57,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194744852]
[2023-11-19 07:37:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194744852] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:57,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:37:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467138698]
[2023-11-19 07:37:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:57,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:57,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 332
[2023-11-19 07:37:57,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 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)
[2023-11-19 07:37:57,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:57,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 332
[2023-11-19 07:37:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:57,849 INFO L124 PetriNetUnfolderBase]: 157/380 cut-off events.
[2023-11-19 07:37:57,851 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES.
[2023-11-19 07:37:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 380 events. 157/380 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1604 event pairs, 100 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 839. Up to 222 conditions per place.
[2023-11-19 07:37:57,855 INFO L140 encePairwiseOnDemand]: 327/332 looper letters, 65 selfloop transitions, 3 changer transitions 0/70 dead transitions.
[2023-11-19 07:37:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 304 flow
[2023-11-19 07:37:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:37:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:37:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions.
[2023-11-19 07:37:57,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755020080321285
[2023-11-19 07:37:57,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions.
[2023-11-19 07:37:57,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions.
[2023-11-19 07:37:57,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:57,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions.
[2023-11-19 07:37:57,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:57,870 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 116 flow. Second operand 3 states and 374 transitions.
[2023-11-19 07:37:57,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 304 flow
[2023-11-19 07:37:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:37:57,874 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 132 flow
[2023-11-19 07:37:57,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=46}
[2023-11-19 07:37:57,877 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -20 predicate places.
[2023-11-19 07:37:57,878 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 132 flow
[2023-11-19 07:37:57,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 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)
[2023-11-19 07:37:57,878 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:57,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:37:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:37:57,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1005254005, now seen corresponding path program 1 times
[2023-11-19 07:37:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466496304]
[2023-11-19 07:37:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:37:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:37:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:37:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466496304]
[2023-11-19 07:37:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466496304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:37:58,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:37:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:37:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673501273]
[2023-11-19 07:37:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:37:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:37:58,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:37:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:37:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:37:58,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 332
[2023-11-19 07:37:58,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:37:58,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 332
[2023-11-19 07:37:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:37:58,334 INFO L124 PetriNetUnfolderBase]: 156/369 cut-off events.
[2023-11-19 07:37:58,335 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES.
[2023-11-19 07:37:58,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 369 events. 156/369 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1506 event pairs, 74 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 829. Up to 137 conditions per place.
[2023-11-19 07:37:58,338 INFO L140 encePairwiseOnDemand]: 323/332 looper letters, 61 selfloop transitions, 8 changer transitions 0/71 dead transitions.
[2023-11-19 07:37:58,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 324 flow
[2023-11-19 07:37:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:37:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:37:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions.
[2023-11-19 07:37:58,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35542168674698793
[2023-11-19 07:37:58,342 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 472 transitions.
[2023-11-19 07:37:58,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 472 transitions.
[2023-11-19 07:37:58,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:37:58,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 472 transitions.
[2023-11-19 07:37:58,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:58,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:58,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:58,349 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 132 flow. Second operand 4 states and 472 transitions.
[2023-11-19 07:37:58,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 324 flow
[2023-11-19 07:37:58,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:37:58,354 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 169 flow
[2023-11-19 07:37:58,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=50, PETRI_TRANSITIONS=46}
[2023-11-19 07:37:58,357 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -17 predicate places.
[2023-11-19 07:37:58,357 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 169 flow
[2023-11-19 07:37:58,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:37:58,358 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:37:58,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1]
[2023-11-19 07:37:58,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:37:58,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] ===
[2023-11-19 07:37:58,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:37:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1098165473, now seen corresponding path program 1 times
[2023-11-19 07:37:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:37:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305708933]
[2023-11-19 07:37:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:37:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:37:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:37:58,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:37:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:37:58,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:37:58,416 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:37:58,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (81 of 82 remaining)
[2023-11-19 07:37:58,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 82 remaining)
[2023-11-19 07:37:58,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 82 remaining)
[2023-11-19 07:37:58,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 82 remaining)
[2023-11-19 07:37:58,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 82 remaining)
[2023-11-19 07:37:58,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 82 remaining)
[2023-11-19 07:37:58,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 82 remaining)
[2023-11-19 07:37:58,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 82 remaining)
[2023-11-19 07:37:58,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 82 remaining)
[2023-11-19 07:37:58,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 82 remaining)
[2023-11-19 07:37:58,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 82 remaining)
[2023-11-19 07:37:58,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 82 remaining)
[2023-11-19 07:37:58,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 82 remaining)
[2023-11-19 07:37:58,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (58 of 82 remaining)
[2023-11-19 07:37:58,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 82 remaining)
[2023-11-19 07:37:58,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 82 remaining)
[2023-11-19 07:37:58,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (55 of 82 remaining)
[2023-11-19 07:37:58,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 82 remaining)
[2023-11-19 07:37:58,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 82 remaining)
[2023-11-19 07:37:58,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 82 remaining)
[2023-11-19 07:37:58,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 82 remaining)
[2023-11-19 07:37:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 82 remaining)
[2023-11-19 07:37:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 82 remaining)
[2023-11-19 07:37:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 82 remaining)
[2023-11-19 07:37:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 82 remaining)
[2023-11-19 07:37:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 82 remaining)
[2023-11-19 07:37:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 82 remaining)
[2023-11-19 07:37:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (44 of 82 remaining)
[2023-11-19 07:37:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 82 remaining)
[2023-11-19 07:37:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 82 remaining)
[2023-11-19 07:37:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 82 remaining)
[2023-11-19 07:37:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 82 remaining)
[2023-11-19 07:37:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (39 of 82 remaining)
[2023-11-19 07:37:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 82 remaining)
[2023-11-19 07:37:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 82 remaining)
[2023-11-19 07:37:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 82 remaining)
[2023-11-19 07:37:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 82 remaining)
[2023-11-19 07:37:58,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 82 remaining)
[2023-11-19 07:37:58,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 82 remaining)
[2023-11-19 07:37:58,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 82 remaining)
[2023-11-19 07:37:58,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (16 of 82 remaining)
[2023-11-19 07:37:58,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (13 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 82 remaining)
[2023-11-19 07:37:58,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 82 remaining)
[2023-11-19 07:37:58,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 82 remaining)
[2023-11-19 07:37:58,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (2 of 82 remaining)
[2023-11-19 07:37:58,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 82 remaining)
[2023-11-19 07:37:58,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 82 remaining)
[2023-11-19 07:37:58,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:37:58,443 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:37:58,451 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:37:58,451 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2023-11-19 07:37:58,585 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:37:58,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,667 INFO L124 PetriNetUnfolderBase]: 27/321 cut-off events.
[2023-11-19 07:37:58,667 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:37:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 321 events. 27/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 987 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 262. Up to 6 conditions per place.
[2023-11-19 07:37:58,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:37:58,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 584 flow
[2023-11-19 07:37:58,756 INFO L124 PetriNetUnfolderBase]: 27/321 cut-off events.
[2023-11-19 07:37:58,756 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:37:58,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 321 events. 27/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 987 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 262. Up to 6 conditions per place.
[2023-11-19 07:37:58,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 39284
[2023-11-19 07:38:06,611 INFO L134 LiptonReduction]: Checked pairs total: 116148
[2023-11-19 07:38:06,611 INFO L136 LiptonReduction]: Total number of compositions: 245
[2023-11-19 07:38:06,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:38:06,614 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;@420a948c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:38:06,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations.
[2023-11-19 07:38:06,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:38:06,616 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events.
[2023-11-19 07:38:06,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:38:06,616 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:06,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:38:06,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 54634, now seen corresponding path program 1 times
[2023-11-19 07:38:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194828763]
[2023-11-19 07:38:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194828763]
[2023-11-19 07:38:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194828763] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:38:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921886306]
[2023-11-19 07:38:06,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:38:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:38:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:38:06,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 532
[2023-11-19 07:38:06,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 147 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:06,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:06,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 532
[2023-11-19 07:38:06,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:38:08,954 INFO L124 PetriNetUnfolderBase]: 9315/15380 cut-off events.
[2023-11-19 07:38:08,954 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES.
[2023-11-19 07:38:09,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29954 conditions, 15380 events. 9315/15380 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 125996 event pairs, 8280 based on Foata normal form. 210/6222 useless extension candidates. Maximal degree in co-relation 24349. Up to 14445 conditions per place.
[2023-11-19 07:38:09,131 INFO L140 encePairwiseOnDemand]: 501/532 looper letters, 92 selfloop transitions, 1 changer transitions 0/114 dead transitions.
[2023-11-19 07:38:09,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 424 flow
[2023-11-19 07:38:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:38:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:38:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions.
[2023-11-19 07:38:09,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191729323308271
[2023-11-19 07:38:09,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions.
[2023-11-19 07:38:09,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions.
[2023-11-19 07:38:09,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:38:09,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions.
[2023-11-19 07:38:09,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:09,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:09,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:09,143 INFO L175 Difference]: Start difference. First operand has 138 places, 147 transitions, 304 flow. Second operand 3 states and 669 transitions.
[2023-11-19 07:38:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 424 flow
[2023-11-19 07:38:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:38:09,150 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 240 flow
[2023-11-19 07:38:09,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=111, PETRI_TRANSITIONS=114}
[2023-11-19 07:38:09,153 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -27 predicate places.
[2023-11-19 07:38:09,153 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 240 flow
[2023-11-19 07:38:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:09,156 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:09,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:38:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 07:38:09,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:09,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash 54633, now seen corresponding path program 1 times
[2023-11-19 07:38:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:09,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700245704]
[2023-11-19 07:38:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:09,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700245704]
[2023-11-19 07:38:09,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700245704] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:09,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:09,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:38:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450601987]
[2023-11-19 07:38:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:09,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:38:09,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:38:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:38:09,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 532
[2023-11-19 07:38:09,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:09,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:09,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 532
[2023-11-19 07:38:09,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:38:12,597 INFO L124 PetriNetUnfolderBase]: 13947/23739 cut-off events.
[2023-11-19 07:38:12,597 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES.
[2023-11-19 07:38:12,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45925 conditions, 23739 events. 13947/23739 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 199547 event pairs, 6019 based on Foata normal form. 0/10305 useless extension candidates. Maximal degree in co-relation 45917. Up to 12142 conditions per place.
[2023-11-19 07:38:12,791 INFO L140 encePairwiseOnDemand]: 525/532 looper letters, 177 selfloop transitions, 6 changer transitions 0/204 dead transitions.
[2023-11-19 07:38:12,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 204 transitions, 791 flow
[2023-11-19 07:38:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:38:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:38:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions.
[2023-11-19 07:38:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423558897243108
[2023-11-19 07:38:12,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions.
[2023-11-19 07:38:12,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions.
[2023-11-19 07:38:12,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:38:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions.
[2023-11-19 07:38:12,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:12,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:12,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:12,807 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 240 flow. Second operand 3 states and 706 transitions.
[2023-11-19 07:38:12,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 204 transitions, 791 flow
[2023-11-19 07:38:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 204 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:38:12,814 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 285 flow
[2023-11-19 07:38:12,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=114, PETRI_TRANSITIONS=119}
[2023-11-19 07:38:12,817 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -24 predicate places.
[2023-11-19 07:38:12,817 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 285 flow
[2023-11-19 07:38:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:12,817 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:12,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:38:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 07:38:12,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:12,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash 52547303, now seen corresponding path program 1 times
[2023-11-19 07:38:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:12,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894993311]
[2023-11-19 07:38:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894993311]
[2023-11-19 07:38:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894993311] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:12,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:38:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104622250]
[2023-11-19 07:38:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:38:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:38:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:38:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 532
[2023-11-19 07:38:13,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:13,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 532
[2023-11-19 07:38:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:38:18,228 INFO L124 PetriNetUnfolderBase]: 26010/44537 cut-off events.
[2023-11-19 07:38:18,229 INFO L125 PetriNetUnfolderBase]: For 15770/15770 co-relation queries the response was YES.
[2023-11-19 07:38:18,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99154 conditions, 44537 events. 26010/44537 cut-off events. For 15770/15770 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 423279 event pairs, 7285 based on Foata normal form. 0/23193 useless extension candidates. Maximal degree in co-relation 99143. Up to 17608 conditions per place.
[2023-11-19 07:38:18,584 INFO L140 encePairwiseOnDemand]: 519/532 looper letters, 246 selfloop transitions, 17 changer transitions 0/284 dead transitions.
[2023-11-19 07:38:18,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 284 transitions, 1196 flow
[2023-11-19 07:38:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:38:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:38:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 951 transitions.
[2023-11-19 07:38:18,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468984962406015
[2023-11-19 07:38:18,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 951 transitions.
[2023-11-19 07:38:18,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 951 transitions.
[2023-11-19 07:38:18,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:38:18,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 951 transitions.
[2023-11-19 07:38:18,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:18,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:18,599 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:18,599 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 285 flow. Second operand 4 states and 951 transitions.
[2023-11-19 07:38:18,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 284 transitions, 1196 flow
[2023-11-19 07:38:18,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 284 transitions, 1166 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:38:18,618 INFO L231 Difference]: Finished difference. Result has 118 places, 135 transitions, 433 flow
[2023-11-19 07:38:18,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=118, PETRI_TRANSITIONS=135}
[2023-11-19 07:38:18,619 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -20 predicate places.
[2023-11-19 07:38:18,619 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 135 transitions, 433 flow
[2023-11-19 07:38:18,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:18,620 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:18,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:38:18,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-19 07:38:18,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:18,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash 52547304, now seen corresponding path program 1 times
[2023-11-19 07:38:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:18,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918090327]
[2023-11-19 07:38:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:18,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918090327]
[2023-11-19 07:38:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918090327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:18,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:38:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537329636]
[2023-11-19 07:38:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:38:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:38:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:38:18,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 532
[2023-11-19 07:38:18,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 135 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:18,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:18,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 532
[2023-11-19 07:38:18,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:38:23,346 INFO L124 PetriNetUnfolderBase]: 24256/41312 cut-off events.
[2023-11-19 07:38:23,346 INFO L125 PetriNetUnfolderBase]: For 13208/13208 co-relation queries the response was YES.
[2023-11-19 07:38:23,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93786 conditions, 41312 events. 24256/41312 cut-off events. For 13208/13208 co-relation queries the response was YES. Maximal size of possible extension queue 2471. Compared 390174 event pairs, 19578 based on Foata normal form. 404/20591 useless extension candidates. Maximal degree in co-relation 93772. Up to 38126 conditions per place.
[2023-11-19 07:38:23,756 INFO L140 encePairwiseOnDemand]: 527/532 looper letters, 109 selfloop transitions, 1 changer transitions 0/131 dead transitions.
[2023-11-19 07:38:23,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 645 flow
[2023-11-19 07:38:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:38:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:38:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions.
[2023-11-19 07:38:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40225563909774437
[2023-11-19 07:38:23,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions.
[2023-11-19 07:38:23,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions.
[2023-11-19 07:38:23,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:38:23,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions.
[2023-11-19 07:38:23,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:23,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:23,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:23,768 INFO L175 Difference]: Start difference. First operand has 118 places, 135 transitions, 433 flow. Second operand 3 states and 642 transitions.
[2023-11-19 07:38:23,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 645 flow
[2023-11-19 07:38:23,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 645 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:38:23,793 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 427 flow
[2023-11-19 07:38:23,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=116, PETRI_TRANSITIONS=131}
[2023-11-19 07:38:23,795 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -22 predicate places.
[2023-11-19 07:38:23,795 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 427 flow
[2023-11-19 07:38:23,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:23,795 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:23,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:23,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 07:38:23,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:23,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1041603226, now seen corresponding path program 1 times
[2023-11-19 07:38:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511561100]
[2023-11-19 07:38:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511561100]
[2023-11-19 07:38:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511561100] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:23,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:23,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:38:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117577669]
[2023-11-19 07:38:23,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:38:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:38:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:38:23,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 532
[2023-11-19 07:38:23,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:23,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:23,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 532
[2023-11-19 07:38:23,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:38:30,166 INFO L124 PetriNetUnfolderBase]: 29578/51040 cut-off events.
[2023-11-19 07:38:30,166 INFO L125 PetriNetUnfolderBase]: For 16306/16306 co-relation queries the response was YES.
[2023-11-19 07:38:30,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115859 conditions, 51040 events. 29578/51040 cut-off events. For 16306/16306 co-relation queries the response was YES. Maximal size of possible extension queue 3124. Compared 501395 event pairs, 8936 based on Foata normal form. 0/25811 useless extension candidates. Maximal degree in co-relation 115843. Up to 24270 conditions per place.
[2023-11-19 07:38:30,454 INFO L140 encePairwiseOnDemand]: 501/532 looper letters, 223 selfloop transitions, 39 changer transitions 0/283 dead transitions.
[2023-11-19 07:38:30,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 283 transitions, 1365 flow
[2023-11-19 07:38:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:38:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:38:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 926 transitions.
[2023-11-19 07:38:30,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351503759398496
[2023-11-19 07:38:30,459 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 926 transitions.
[2023-11-19 07:38:30,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 926 transitions.
[2023-11-19 07:38:30,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:38:30,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 926 transitions.
[2023-11-19 07:38:30,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.5) internal successors, (926), 4 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:30,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:30,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:30,469 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 427 flow. Second operand 4 states and 926 transitions.
[2023-11-19 07:38:30,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 283 transitions, 1365 flow
[2023-11-19 07:38:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 283 transitions, 1364 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:38:30,499 INFO L231 Difference]: Finished difference. Result has 121 places, 161 transitions, 786 flow
[2023-11-19 07:38:30,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=786, PETRI_PLACES=121, PETRI_TRANSITIONS=161}
[2023-11-19 07:38:30,500 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -17 predicate places.
[2023-11-19 07:38:30,501 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 161 transitions, 786 flow
[2023-11-19 07:38:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:30,501 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:38:30,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:30,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-19 07:38:30,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-19 07:38:30,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1041603225, now seen corresponding path program 1 times
[2023-11-19 07:38:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857817525]
[2023-11-19 07:38:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:30,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857817525]
[2023-11-19 07:38:30,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857817525] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:30,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:30,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:38:30,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129998316]
[2023-11-19 07:38:30,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:30,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:38:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:38:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:38:30,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 532
[2023-11-19 07:38:30,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 161 transitions, 786 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:30,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:38:30,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 532
[2023-11-19 07:38:30,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand