./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/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_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:19,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:19,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:43:19,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:19,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:19,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:19,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:19,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:19,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:19,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:19,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:19,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:19,992 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:19,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:19,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:19,994 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:19,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:19,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:19,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:19,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:19,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:19,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:19,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:19,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:19,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:19,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:19,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:19,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:20,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:20,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:20,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:20,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:20,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:20,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:20,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:20,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:20,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:20,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:20,003 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:20,003 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_7767a38f-1ba2-4884-bbc5-4ca2081720b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2023-11-19 07:43:20,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:20,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:20,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:20,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:20,296 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:20,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-19 07:43:23,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:23,846 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:23,851 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-19 07:43:23,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/data/de37644a4/9b1f54af4d7f495e856d8ec4a38d7543/FLAG64012399d [2023-11-19 07:43:23,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/data/de37644a4/9b1f54af4d7f495e856d8ec4a38d7543 [2023-11-19 07:43:23,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:23,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:23,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:23,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:23,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:23,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:23" (1/1) ... [2023-11-19 07:43:23,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a500ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:23, skipping insertion in model container [2023-11-19 07:43:23,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:23" (1/1) ... [2023-11-19 07:43:23,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:24,201 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i[1086,1099] [2023-11-19 07:43:24,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:24,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:24,414 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i[1086,1099] [2023-11-19 07:43:24,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:24,531 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:24,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24 WrapperNode [2023-11-19 07:43:24,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:24,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:24,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:24,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:24,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,600 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 75 [2023-11-19 07:43:24,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:24,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:24,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:24,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:24,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:24,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:24,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:24,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:24,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:24,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:24,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:43:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:43:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:24,743 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 07:43:24,932 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:24,935 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:25,121 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:25,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:25,130 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:43:25,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:25 BoogieIcfgContainer [2023-11-19 07:43:25,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:25,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:25,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:25,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:25,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:23" (1/3) ... [2023-11-19 07:43:25,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1021aa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:25, skipping insertion in model container [2023-11-19 07:43:25,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:24" (2/3) ... [2023-11-19 07:43:25,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1021aa15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:25, skipping insertion in model container [2023-11-19 07:43:25,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:25" (3/3) ... [2023-11-19 07:43:25,148 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2023-11-19 07:43:25,158 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:25,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:25,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:43:25,170 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:25,248 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:43:25,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 191 flow [2023-11-19 07:43:25,372 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2023-11-19 07:43:25,372 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:43:25,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-19 07:43:25,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 191 flow [2023-11-19 07:43:25,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 83 transitions, 169 flow [2023-11-19 07:43:25,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:25,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 83 transitions, 169 flow [2023-11-19 07:43:25,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 83 transitions, 169 flow [2023-11-19 07:43:25,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions, 169 flow [2023-11-19 07:43:25,434 INFO L124 PetriNetUnfolderBase]: 4/83 cut-off events. [2023-11-19 07:43:25,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:25,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 4/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-19 07:43:25,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-11-19 07:43:28,146 INFO L134 LiptonReduction]: Checked pairs total: 3516 [2023-11-19 07:43:28,147 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-11-19 07:43:28,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:28,168 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@41f5811b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:28,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:43:28,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:28,170 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:43:28,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:28,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:28,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:43:28,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:28,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash 355, now seen corresponding path program 1 times [2023-11-19 07:43:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:28,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562247738] [2023-11-19 07:43:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:28,325 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 07:43:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562247738] [2023-11-19 07:43:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562247738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:43:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885259040] [2023-11-19 07:43:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:43:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:43:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:28,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 184 [2023-11-19 07:43:28,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 07:43:28,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:28,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 184 [2023-11-19 07:43:28,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:28,460 INFO L124 PetriNetUnfolderBase]: 72/163 cut-off events. [2023-11-19 07:43:28,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:28,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 163 events. 72/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 72 based on Foata normal form. 9/135 useless extension candidates. Maximal degree in co-relation 322. Up to 164 conditions per place. [2023-11-19 07:43:28,463 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-19 07:43:28,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 79 flow [2023-11-19 07:43:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:43:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:43:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2023-11-19 07:43:28,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2023-11-19 07:43:28,483 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2023-11-19 07:43:28,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2023-11-19 07:43:28,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:28,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2023-11-19 07:43:28,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 07:43:28,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:28,503 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:28,505 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 51 flow. Second operand 2 states and 187 transitions. [2023-11-19 07:43:28,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 79 flow [2023-11-19 07:43:28,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:28,510 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 40 flow [2023-11-19 07:43:28,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-19 07:43:28,517 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2023-11-19 07:43:28,517 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 40 flow [2023-11-19 07:43:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 07:43:28,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:43:28,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:28,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:28,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 10930105, now seen corresponding path program 1 times [2023-11-19 07:43:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:28,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453248735] [2023-11-19 07:43:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:28,892 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 07:43:28,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:28,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453248735] [2023-11-19 07:43:28,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453248735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:28,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:28,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:28,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124335311] [2023-11-19 07:43:28,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:28,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:28,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 184 [2023-11-19 07:43:28,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 07:43:28,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:28,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 184 [2023-11-19 07:43:28,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:29,021 INFO L124 PetriNetUnfolderBase]: 66/151 cut-off events. [2023-11-19 07:43:29,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:29,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 151 events. 66/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 510 event pairs, 38 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 304. Up to 138 conditions per place. [2023-11-19 07:43:29,027 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 22 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-11-19 07:43:29,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 25 transitions, 102 flow [2023-11-19 07:43:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-19 07:43:29,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2023-11-19 07:43:29,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-19 07:43:29,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-19 07:43:29,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-19 07:43:29,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 07:43:29,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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 07:43:29,047 INFO L81 ComplementDD]: Finished complementDD. Result 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 07:43:29,047 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 40 flow. Second operand 3 states and 258 transitions. [2023-11-19 07:43:29,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 25 transitions, 102 flow [2023-11-19 07:43:29,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:29,053 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 61 flow [2023-11-19 07:43:29,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-19 07:43:29,056 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-11-19 07:43:29,056 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 61 flow [2023-11-19 07:43:29,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 07:43:29,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:29,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:29,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1913874202, now seen corresponding path program 1 times [2023-11-19 07:43:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882673842] [2023-11-19 07:43:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882673842] [2023-11-19 07:43:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882673842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:29,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:29,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004647625] [2023-11-19 07:43:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:29,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:29,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:29,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:29,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 184 [2023-11-19 07:43:29,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 07:43:29,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:29,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 184 [2023-11-19 07:43:29,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:29,257 INFO L124 PetriNetUnfolderBase]: 71/165 cut-off events. [2023-11-19 07:43:29,258 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 07:43:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 165 events. 71/165 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 607 event pairs, 41 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 367. Up to 132 conditions per place. [2023-11-19 07:43:29,260 INFO L140 encePairwiseOnDemand]: 177/184 looper letters, 23 selfloop transitions, 6 changer transitions 1/30 dead transitions. [2023-11-19 07:43:29,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 141 flow [2023-11-19 07:43:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-19 07:43:29,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-11-19 07:43:29,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-19 07:43:29,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-19 07:43:29,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-19 07:43:29,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 07:43:29,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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 07:43:29,267 INFO L81 ComplementDD]: Finished complementDD. Result 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 07:43:29,268 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 61 flow. Second operand 3 states and 261 transitions. [2023-11-19 07:43:29,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 141 flow [2023-11-19 07:43:29,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:29,270 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 104 flow [2023-11-19 07:43:29,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-19 07:43:29,271 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-11-19 07:43:29,271 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 104 flow [2023-11-19 07:43:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 07:43:29,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:29,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:29,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1913551127, now seen corresponding path program 1 times [2023-11-19 07:43:29,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651589877] [2023-11-19 07:43:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:29,373 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 07:43:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651589877] [2023-11-19 07:43:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651589877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:29,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549680354] [2023-11-19 07:43:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:29,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:29,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:29,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 184 [2023-11-19 07:43:29,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 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 07:43:29,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:29,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 184 [2023-11-19 07:43:29,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:29,564 INFO L124 PetriNetUnfolderBase]: 72/174 cut-off events. [2023-11-19 07:43:29,564 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-19 07:43:29,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 174 events. 72/174 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 673 event pairs, 20 based on Foata normal form. 13/182 useless extension candidates. Maximal degree in co-relation 491. Up to 107 conditions per place. [2023-11-19 07:43:29,571 INFO L140 encePairwiseOnDemand]: 175/184 looper letters, 29 selfloop transitions, 10 changer transitions 9/48 dead transitions. [2023-11-19 07:43:29,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 286 flow [2023-11-19 07:43:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2023-11-19 07:43:29,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2023-11-19 07:43:29,575 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 483 transitions. [2023-11-19 07:43:29,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 483 transitions. [2023-11-19 07:43:29,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 483 transitions. [2023-11-19 07:43:29,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 07:43:29,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states 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 07:43:29,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states 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 07:43:29,583 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 104 flow. Second operand 6 states and 483 transitions. [2023-11-19 07:43:29,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 286 flow [2023-11-19 07:43:29,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 262 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:29,591 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 157 flow [2023-11-19 07:43:29,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-19 07:43:29,593 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-11-19 07:43:29,593 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 157 flow [2023-11-19 07:43:29,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 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 07:43:29,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:29,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:29,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash -799428365, now seen corresponding path program 1 times [2023-11-19 07:43:29,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380469477] [2023-11-19 07:43:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:29,684 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 07:43:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380469477] [2023-11-19 07:43:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380469477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:29,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:29,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25483093] [2023-11-19 07:43:29,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:29,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 184 [2023-11-19 07:43:29,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 07:43:29,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:29,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 184 [2023-11-19 07:43:29,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:29,752 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-11-19 07:43:29,753 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:43:29,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 26 events. 0/26 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 11/37 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2023-11-19 07:43:29,755 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 15 selfloop transitions, 4 changer transitions 1/20 dead transitions. [2023-11-19 07:43:29,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 136 flow [2023-11-19 07:43:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-11-19 07:43:29,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528985507246377 [2023-11-19 07:43:29,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-11-19 07:43:29,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-11-19 07:43:29,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-11-19 07:43:29,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 07:43:29,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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 07:43:29,763 INFO L81 ComplementDD]: Finished complementDD. Result 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 07:43:29,763 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 157 flow. Second operand 3 states and 250 transitions. [2023-11-19 07:43:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 136 flow [2023-11-19 07:43:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 114 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 07:43:29,766 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 77 flow [2023-11-19 07:43:29,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-11-19 07:43:29,770 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-11-19 07:43:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 77 flow [2023-11-19 07:43:29,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 07:43:29,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:43:29,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:29,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1435267775, now seen corresponding path program 1 times [2023-11-19 07:43:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880608474] [2023-11-19 07:43:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:29,937 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 07:43:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:29,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880608474] [2023-11-19 07:43:29,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880608474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321263384] [2023-11-19 07:43:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:29,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:29,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:29,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:30,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 184 [2023-11-19 07:43:30,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 07:43:30,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:30,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 184 [2023-11-19 07:43:30,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:30,080 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-19 07:43:30,080 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:43:30,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 21 events. 0/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-11-19 07:43:30,081 INFO L140 encePairwiseOnDemand]: 177/184 looper letters, 10 selfloop transitions, 2 changer transitions 7/19 dead transitions. [2023-11-19 07:43:30,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 115 flow [2023-11-19 07:43:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-11-19 07:43:30,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40398550724637683 [2023-11-19 07:43:30,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-11-19 07:43:30,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-11-19 07:43:30,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:30,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-11-19 07:43:30,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:43:30,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states 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 07:43:30,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states 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 07:43:30,091 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 77 flow. Second operand 6 states and 446 transitions. [2023-11-19 07:43:30,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 115 flow [2023-11-19 07:43:30,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:30,095 INFO L231 Difference]: Finished difference. Result has 32 places, 12 transitions, 47 flow [2023-11-19 07:43:30,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=47, PETRI_PLACES=32, PETRI_TRANSITIONS=12} [2023-11-19 07:43:30,098 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-11-19 07:43:30,098 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 12 transitions, 47 flow [2023-11-19 07:43:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 07:43:30,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:30,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:30,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:43:30,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:43:30,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2089656478, now seen corresponding path program 1 times [2023-11-19 07:43:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097602277] [2023-11-19 07:43:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:30,246 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 07:43:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:30,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097602277] [2023-11-19 07:43:30,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097602277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:30,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:30,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:30,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105411182] [2023-11-19 07:43:30,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:30,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:30,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:30,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:30,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 184 [2023-11-19 07:43:30,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 12 transitions, 47 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 184 [2023-11-19 07:43:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:30,372 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-19 07:43:30,372 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:43:30,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 12 events. 0/12 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-11-19 07:43:30,373 INFO L140 encePairwiseOnDemand]: 177/184 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-11-19 07:43:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 12 transitions, 70 flow [2023-11-19 07:43:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:43:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:43:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 510 transitions. [2023-11-19 07:43:30,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39596273291925466 [2023-11-19 07:43:30,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 510 transitions. [2023-11-19 07:43:30,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 510 transitions. [2023-11-19 07:43:30,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:30,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 510 transitions. [2023-11-19 07:43:30,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 07:43:30,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 07:43:30,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 07:43:30,384 INFO L175 Difference]: Start difference. First operand has 32 places, 12 transitions, 47 flow. Second operand 7 states and 510 transitions. [2023-11-19 07:43:30,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 12 transitions, 70 flow [2023-11-19 07:43:30,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-19 07:43:30,385 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-11-19 07:43:30,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-11-19 07:43:30,386 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-11-19 07:43:30,387 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-11-19 07:43:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:30,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-19 07:43:30,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-19 07:43:30,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-19 07:43:30,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-19 07:43:30,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-19 07:43:30,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-19 07:43:30,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-19 07:43:30,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:43:30,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:30,398 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:43:30,399 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:43:30,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:43:30 BasicIcfg [2023-11-19 07:43:30,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:43:30,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:43:30,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:43:30,414 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:43:30,414 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:25" (3/4) ... [2023-11-19 07:43:30,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:43:30,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-19 07:43:30,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 07:43:30,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:43:30,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:43:30,428 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:43:30,534 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:43:30,534 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:43:30,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:43:30,535 INFO L158 Benchmark]: Toolchain (without parser) took 6632.86ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 128.3MB in the beginning and 131.2MB in the end (delta: -2.9MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,536 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 167.8MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:30,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.67ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 109.0MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.65ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,537 INFO L158 Benchmark]: Boogie Preprocessor took 56.71ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 105.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,537 INFO L158 Benchmark]: RCFGBuilder took 475.39ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 92.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,538 INFO L158 Benchmark]: TraceAbstraction took 5275.88ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 91.4MB in the beginning and 136.5MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:30,538 INFO L158 Benchmark]: Witness Printer took 121.48ms. Allocated memory is still 209.7MB. Free memory was 136.5MB in the beginning and 131.2MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:43:30,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 167.8MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.67ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 109.0MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.65ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.71ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 105.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 475.39ms. Allocated memory is still 167.8MB. Free memory was 105.4MB in the beginning and 92.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5275.88ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 91.4MB in the beginning and 136.5MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 121.48ms. Allocated memory is still 209.7MB. Free memory was 136.5MB in the beginning and 131.2MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 83 PlacesBefore, 25 PlacesAfterwards, 83 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 92 TotalNumberOfCompositions, 3516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1509, independent: 1295, independent conditional: 0, independent unconditional: 1295, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 795, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1509, independent: 538, independent conditional: 0, independent unconditional: 538, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 795, unknown conditional: 0, unknown unconditional: 795] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 607 IncrementalHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 22 mSDtfsCounter, 607 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:43:30,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7767a38f-1ba2-4884-bbc5-4ca2081720b1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE