./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/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_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 631177edb7ca950f3594c5b6eaac98148a00ee69e6a0cd62c1c95947fa56259c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:59,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:59,826 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:40:59,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:59,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:59,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:59,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:59,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:59,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:59,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:59,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:59,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:59,889 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:59,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:59,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:59,891 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:59,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:59,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:59,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:59,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:59,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:59,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:59,894 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:40:59,895 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:59,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:59,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:59,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:59,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:59,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:59,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:59,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:59,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:59,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:59,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:59,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:59,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:59,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:59,901 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:59,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:59,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:59,901 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:59,902 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_8707bfdb-0ecd-407c-b946-420ddbe310a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 631177edb7ca950f3594c5b6eaac98148a00ee69e6a0cd62c1c95947fa56259c [2023-11-19 07:41:00,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:00,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:00,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:00,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:00,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:00,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2023-11-19 07:41:03,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:03,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:03,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2023-11-19 07:41:03,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/data/545594fd9/aff0d28e0e52461499e381c514660ecb/FLAG7dce75ec0 [2023-11-19 07:41:03,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/data/545594fd9/aff0d28e0e52461499e381c514660ecb [2023-11-19 07:41:03,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:03,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:03,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:03,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:03,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:03,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365c82d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03, skipping insertion in model container [2023-11-19 07:41:03,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:03,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:03,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:03,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:03,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:03,984 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:03,984 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:03,992 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:03,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03 WrapperNode [2023-11-19 07:41:03,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:04,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:04,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:04,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:04,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,070 INFO L138 Inliner]: procedures = 22, calls = 36, calls flagged for inlining = 16, calls inlined = 30, statements flattened = 377 [2023-11-19 07:41:04,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:04,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:04,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:04,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:04,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:04,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:04,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:04,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:04,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (1/1) ... [2023-11-19 07:41:04,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:04,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:04,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:04,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8707bfdb-0ecd-407c-b946-420ddbe310a6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:41:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:41:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:41:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:41:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:41:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:41:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:04,240 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 07:41:04,399 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:04,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:05,242 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:07,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:07,910 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:07,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:07 BoogieIcfgContainer [2023-11-19 07:41:07,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:07,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:07,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:07,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:07,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:03" (1/3) ... [2023-11-19 07:41:07,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d15176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:07, skipping insertion in model container [2023-11-19 07:41:07,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:03" (2/3) ... [2023-11-19 07:41:07,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d15176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:07, skipping insertion in model container [2023-11-19 07:41:07,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:07" (3/3) ... [2023-11-19 07:41:07,932 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2023-11-19 07:41:07,941 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:41:07,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:07,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-11-19 07:41:07,952 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:09,015 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:41:09,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 247 transitions, 508 flow [2023-11-19 07:41:09,378 INFO L124 PetriNetUnfolderBase]: 78/245 cut-off events. [2023-11-19 07:41:09,378 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 245 events. 78/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 445 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 170. Up to 16 conditions per place. [2023-11-19 07:41:09,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 247 transitions, 508 flow [2023-11-19 07:41:09,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 207 transitions, 423 flow [2023-11-19 07:41:09,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:09,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 207 transitions, 423 flow [2023-11-19 07:41:09,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 207 transitions, 423 flow [2023-11-19 07:41:09,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 207 transitions, 423 flow [2023-11-19 07:41:09,597 INFO L124 PetriNetUnfolderBase]: 75/207 cut-off events. [2023-11-19 07:41:09,598 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:41:09,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 207 events. 75/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 432 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 170. Up to 16 conditions per place. [2023-11-19 07:41:09,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 8502