./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_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_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/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_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/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_b55c7b46-ea37-473c-a73d-c01d98782a37/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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:48,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:48,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:57:48,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:48,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:48,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:48,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:48,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:48,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:48,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:48,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:48,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:48,785 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:48,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:48,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:48,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:48,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:48,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:48,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:48,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:48,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:48,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:48,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:48,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:48,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:48,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:48,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:48,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:48,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:48,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:48,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:48,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:48,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:48,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:48,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:48,796 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:48,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:48,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:48,797 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:48,797 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_b55c7b46-ea37-473c-a73d-c01d98782a37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2023-11-19 07:57:49,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:49,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:49,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:49,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:49,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:49,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-19 07:57:52,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:52,432 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:52,433 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-19 07:57:52,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/data/d036e9575/2ad1f60ee2e9473fb5fa4eb24b98464b/FLAG6201b9af6 [2023-11-19 07:57:52,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/data/d036e9575/2ad1f60ee2e9473fb5fa4eb24b98464b [2023-11-19 07:57:52,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:52,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:52,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:52,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:52,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:52,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:52" (1/1) ... [2023-11-19 07:57:52,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b161a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:52, skipping insertion in model container [2023-11-19 07:57:52,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:52" (1/1) ... [2023-11-19 07:57:52,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:52,696 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_b55c7b46-ea37-473c-a73d-c01d98782a37/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-19 07:57:52,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:52,972 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:52,988 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_b55c7b46-ea37-473c-a73d-c01d98782a37/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-19 07:57:53,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:53,089 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:53,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53 WrapperNode [2023-11-19 07:57:53,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:53,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:53,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:53,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:53,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,142 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-19 07:57:53,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:53,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:53,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:53,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:53,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:53,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:53,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:53,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:53,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:53,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:53,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:53,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 07:57:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 07:57:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:57:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-19 07:57:53,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-19 07:57:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:57:53,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:57:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:53,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:53,257 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 07:57:53,399 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:53,400 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:53,723 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:53,747 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:53,750 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:57:53,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:53 BoogieIcfgContainer [2023-11-19 07:57:53,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:53,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:53,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:53,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:53,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:52" (1/3) ... [2023-11-19 07:57:53,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d1adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:53, skipping insertion in model container [2023-11-19 07:57:53,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (2/3) ... [2023-11-19 07:57:53,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d1adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:53, skipping insertion in model container [2023-11-19 07:57:53,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:53" (3/3) ... [2023-11-19 07:57:53,765 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-11-19 07:57:53,774 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:53,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:53,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:57:53,786 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:53,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:57:53,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 352 flow [2023-11-19 07:57:54,085 INFO L124 PetriNetUnfolderBase]: 5/167 cut-off events. [2023-11-19 07:57:54,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:54,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 5/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 278 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:57:54,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 170 transitions, 352 flow [2023-11-19 07:57:54,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 167 transitions, 343 flow [2023-11-19 07:57:54,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:54,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 167 transitions, 343 flow [2023-11-19 07:57:54,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 167 transitions, 343 flow [2023-11-19 07:57:54,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 343 flow [2023-11-19 07:57:54,182 INFO L124 PetriNetUnfolderBase]: 5/167 cut-off events. [2023-11-19 07:57:54,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:54,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 5/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 278 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:57:54,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 10714 [2023-11-19 07:58:00,367 INFO L134 LiptonReduction]: Checked pairs total: 20621 [2023-11-19 07:58:00,367 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-11-19 07:58:00,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:00,407 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;@765b7eb6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:00,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:58:00,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:00,421 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-19 07:58:00,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:00,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:00,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:00,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:00,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash -767717285, now seen corresponding path program 1 times [2023-11-19 07:58:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835962942] [2023-11-19 07:58:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:00,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:00,955 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 07:58:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835962942] [2023-11-19 07:58:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835962942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:00,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:00,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:00,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461977587] [2023-11-19 07:58:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:00,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:01,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 327 [2023-11-19 07:58:01,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 07:58:01,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:01,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 327 [2023-11-19 07:58:01,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:02,492 INFO L124 PetriNetUnfolderBase]: 4933/7596 cut-off events. [2023-11-19 07:58:02,493 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-19 07:58:02,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14770 conditions, 7596 events. 4933/7596 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 51875 event pairs, 943 based on Foata normal form. 225/6153 useless extension candidates. Maximal degree in co-relation 14759. Up to 3175 conditions per place. [2023-11-19 07:58:02,560 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 123 selfloop transitions, 10 changer transitions 0/142 dead transitions. [2023-11-19 07:58:02,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 142 transitions, 580 flow [2023-11-19 07:58:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:58:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1343 transitions. [2023-11-19 07:58:02,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133792048929664 [2023-11-19 07:58:02,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1343 transitions. [2023-11-19 07:58:02,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1343 transitions. [2023-11-19 07:58:02,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:02,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1343 transitions. [2023-11-19 07:58:02,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.875) internal successors, (1343), 8 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states 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 07:58:02,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:02,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:02,614 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 87 flow. Second operand 8 states and 1343 transitions. [2023-11-19 07:58:02,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 142 transitions, 580 flow [2023-11-19 07:58:02,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 142 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:58:02,623 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 151 flow [2023-11-19 07:58:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-19 07:58:02,629 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2023-11-19 07:58:02,630 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 151 flow [2023-11-19 07:58:02,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 07:58:02,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:02,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:02,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:02,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 451258384, now seen corresponding path program 1 times [2023-11-19 07:58:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927065697] [2023-11-19 07:58:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:02,859 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 07:58:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927065697] [2023-11-19 07:58:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927065697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:02,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370033275] [2023-11-19 07:58:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:02,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 327 [2023-11-19 07:58:02,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 07:58:02,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:02,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 327 [2023-11-19 07:58:02,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:04,500 INFO L124 PetriNetUnfolderBase]: 6058/9508 cut-off events. [2023-11-19 07:58:04,500 INFO L125 PetriNetUnfolderBase]: For 8251/8915 co-relation queries the response was YES. [2023-11-19 07:58:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23393 conditions, 9508 events. 6058/9508 cut-off events. For 8251/8915 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 68018 event pairs, 1414 based on Foata normal form. 132/8349 useless extension candidates. Maximal degree in co-relation 23377. Up to 4999 conditions per place. [2023-11-19 07:58:04,600 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 95 selfloop transitions, 22 changer transitions 0/129 dead transitions. [2023-11-19 07:58:04,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 129 transitions, 643 flow [2023-11-19 07:58:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:58:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1291 transitions. [2023-11-19 07:58:04,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49350152905198774 [2023-11-19 07:58:04,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1291 transitions. [2023-11-19 07:58:04,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1291 transitions. [2023-11-19 07:58:04,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:04,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1291 transitions. [2023-11-19 07:58:04,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 07:58:04,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:04,632 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:04,635 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 151 flow. Second operand 8 states and 1291 transitions. [2023-11-19 07:58:04,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 129 transitions, 643 flow [2023-11-19 07:58:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 129 transitions, 643 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:04,768 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 324 flow [2023-11-19 07:58:04,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=324, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2023-11-19 07:58:04,769 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2023-11-19 07:58:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 324 flow [2023-11-19 07:58:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 07:58:04,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:04,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:04,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:04,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 838582871, now seen corresponding path program 1 times [2023-11-19 07:58:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:04,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306010462] [2023-11-19 07:58:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:04,901 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 07:58:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:04,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306010462] [2023-11-19 07:58:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306010462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848281148] [2023-11-19 07:58:04,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:04,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:04,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:04,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 327 [2023-11-19 07:58:04,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 07:58:04,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:04,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 327 [2023-11-19 07:58:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:06,040 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([571] L707-->t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43| 0) (= (ite (<= |v_t2_funThread1of1ForFork2_~y~0#1_19| |v_t2_funThread1of1ForFork2_~x~1#1_19|) 1 0) |v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|) (= |v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43| |v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|) (= |v_#pthreadsMutex_125| (store |v_#pthreadsMutex_126| |v_~#A~0.base_47| (store (select |v_#pthreadsMutex_126| |v_~#A~0.base_47|) |v_~#A~0.offset_47| 0)))) InVars {#pthreadsMutex=|v_#pthreadsMutex_126|, ~#A~0.offset=|v_~#A~0.offset_47|, t2_funThread1of1ForFork2_~x~1#1=|v_t2_funThread1of1ForFork2_~x~1#1_19|, t2_funThread1of1ForFork2_~y~0#1=|v_t2_funThread1of1ForFork2_~y~0#1_19|, ~#A~0.base=|v_~#A~0.base_47|} OutVars{t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1=|v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|, #pthreadsMutex=|v_#pthreadsMutex_125|, ~#A~0.offset=|v_~#A~0.offset_47|, t2_funThread1of1ForFork2_~x~1#1=|v_t2_funThread1of1ForFork2_~x~1#1_19|, t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1=|v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43|, t2_funThread1of1ForFork2_~y~0#1=|v_t2_funThread1of1ForFork2_~y~0#1_19|, ~#A~0.base=|v_~#A~0.base_47|} AuxVars[] AssignedVars[t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1, #pthreadsMutex, t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1][64], [Black: 180#(<= ~h~0 ~g~0), Black: 186#(and (<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 ~g~0)), Black: 188#(and (<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|)), 59#t3_funEXITtrue, 2#ULTIMATE.startEXITtrue, t2_funThread1of1ForFork2InUse, 125#L693true, t_funThread1of1ForFork1InUse, t3_funThread1of1ForFork0InUse, Black: 200#(= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|), Black: 198#(= ~h~0 ~g~0), Black: 206#(and (= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|) (= ~h~0 |ULTIMATE.start_main_~x~3#1|)), Black: 204#(and (= ~h~0 ~g~0) (= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|) (= ~h~0 |ULTIMATE.start_main_~x~3#1|)), 124#t2_funErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 196#true, Black: 182#(<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|), Black: 181#(<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|), 178#true, 212#true]) [2023-11-19 07:58:06,041 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,041 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,041 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,041 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,042 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([571] L707-->t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43| 0) (= (ite (<= |v_t2_funThread1of1ForFork2_~y~0#1_19| |v_t2_funThread1of1ForFork2_~x~1#1_19|) 1 0) |v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|) (= |v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43| |v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|) (= |v_#pthreadsMutex_125| (store |v_#pthreadsMutex_126| |v_~#A~0.base_47| (store (select |v_#pthreadsMutex_126| |v_~#A~0.base_47|) |v_~#A~0.offset_47| 0)))) InVars {#pthreadsMutex=|v_#pthreadsMutex_126|, ~#A~0.offset=|v_~#A~0.offset_47|, t2_funThread1of1ForFork2_~x~1#1=|v_t2_funThread1of1ForFork2_~x~1#1_19|, t2_funThread1of1ForFork2_~y~0#1=|v_t2_funThread1of1ForFork2_~y~0#1_19|, ~#A~0.base=|v_~#A~0.base_47|} OutVars{t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1=|v_t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1_27|, #pthreadsMutex=|v_#pthreadsMutex_125|, ~#A~0.offset=|v_~#A~0.offset_47|, t2_funThread1of1ForFork2_~x~1#1=|v_t2_funThread1of1ForFork2_~x~1#1_19|, t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1=|v_t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1_43|, t2_funThread1of1ForFork2_~y~0#1=|v_t2_funThread1of1ForFork2_~y~0#1_19|, ~#A~0.base=|v_~#A~0.base_47|} AuxVars[] AssignedVars[t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1, #pthreadsMutex, t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1][64], [Black: 180#(<= ~h~0 ~g~0), Black: 186#(and (<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 ~g~0)), Black: 188#(and (<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|) (<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|)), 2#ULTIMATE.startEXITtrue, 70#t3_funErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t2_funThread1of1ForFork2InUse, 125#L693true, t_funThread1of1ForFork1InUse, t3_funThread1of1ForFork0InUse, Black: 200#(= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|), Black: 198#(= ~h~0 ~g~0), Black: 206#(and (= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|) (= ~h~0 |ULTIMATE.start_main_~x~3#1|)), Black: 204#(and (= ~h~0 ~g~0) (= |ULTIMATE.start_main_~x~3#1| |ULTIMATE.start_main_~y~2#1|) (= ~h~0 |ULTIMATE.start_main_~x~3#1|)), 124#t2_funErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 196#true, Black: 182#(<= |t2_funThread1of1ForFork2_~y~0#1| |t2_funThread1of1ForFork2_~x~1#1|), 212#true, Black: 181#(<= ~h~0 |t2_funThread1of1ForFork2_~x~1#1|), 178#true]) [2023-11-19 07:58:06,043 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,043 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,043 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,043 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:58:06,517 INFO L124 PetriNetUnfolderBase]: 5876/10293 cut-off events. [2023-11-19 07:58:06,517 INFO L125 PetriNetUnfolderBase]: For 9722/10205 co-relation queries the response was YES. [2023-11-19 07:58:06,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27425 conditions, 10293 events. 5876/10293 cut-off events. For 9722/10205 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 79135 event pairs, 2342 based on Foata normal form. 950/10370 useless extension candidates. Maximal degree in co-relation 27403. Up to 6205 conditions per place. [2023-11-19 07:58:06,606 INFO L140 encePairwiseOnDemand]: 312/327 looper letters, 59 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2023-11-19 07:58:06,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 608 flow [2023-11-19 07:58:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-11-19 07:58:06,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-11-19 07:58:06,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-11-19 07:58:06,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-11-19 07:58:06,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:06,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-11-19 07:58:06,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 07:58:06,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states 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 07:58:06,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states 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 07:58:06,616 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 324 flow. Second operand 3 states and 495 transitions. [2023-11-19 07:58:06,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 608 flow [2023-11-19 07:58:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 606 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:06,832 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 411 flow [2023-11-19 07:58:06,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2023-11-19 07:58:06,833 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2023-11-19 07:58:06,834 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 411 flow [2023-11-19 07:58:06,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 07:58:06,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:06,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:06,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1449138925, now seen corresponding path program 1 times [2023-11-19 07:58:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744514823] [2023-11-19 07:58:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:07,031 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 07:58:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:07,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744514823] [2023-11-19 07:58:07,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744514823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:07,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:07,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252215756] [2023-11-19 07:58:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:07,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 327 [2023-11-19 07:58:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 07:58:07,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:07,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 327 [2023-11-19 07:58:07,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:08,910 INFO L124 PetriNetUnfolderBase]: 6457/11083 cut-off events. [2023-11-19 07:58:08,910 INFO L125 PetriNetUnfolderBase]: For 18285/19168 co-relation queries the response was YES. [2023-11-19 07:58:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37881 conditions, 11083 events. 6457/11083 cut-off events. For 18285/19168 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 83056 event pairs, 1539 based on Foata normal form. 146/10476 useless extension candidates. Maximal degree in co-relation 37857. Up to 5105 conditions per place. [2023-11-19 07:58:09,036 INFO L140 encePairwiseOnDemand]: 320/327 looper letters, 127 selfloop transitions, 36 changer transitions 1/182 dead transitions. [2023-11-19 07:58:09,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 182 transitions, 1370 flow [2023-11-19 07:58:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:58:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1300 transitions. [2023-11-19 07:58:09,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969418960244648 [2023-11-19 07:58:09,044 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1300 transitions. [2023-11-19 07:58:09,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1300 transitions. [2023-11-19 07:58:09,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:09,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1300 transitions. [2023-11-19 07:58:09,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.5) internal successors, (1300), 8 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 07:58:09,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:09,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 07:58:09,060 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 411 flow. Second operand 8 states and 1300 transitions. [2023-11-19 07:58:09,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 182 transitions, 1370 flow [2023-11-19 07:58:09,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 182 transitions, 1322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:09,319 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 768 flow [2023-11-19 07:58:09,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2023-11-19 07:58:09,322 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2023-11-19 07:58:09,322 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 768 flow [2023-11-19 07:58:09,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 07:58:09,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:09,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:09,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:09,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash -666117630, now seen corresponding path program 1 times [2023-11-19 07:58:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951423193] [2023-11-19 07:58:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951423193] [2023-11-19 07:58:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951423193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:09,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:09,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670454] [2023-11-19 07:58:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:09,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 327 [2023-11-19 07:58:09,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 07:58:09,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:09,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 327 [2023-11-19 07:58:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:11,847 INFO L124 PetriNetUnfolderBase]: 8531/14376 cut-off events. [2023-11-19 07:58:11,847 INFO L125 PetriNetUnfolderBase]: For 27808/28047 co-relation queries the response was YES. [2023-11-19 07:58:11,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48798 conditions, 14376 events. 8531/14376 cut-off events. For 27808/28047 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 106933 event pairs, 1719 based on Foata normal form. 478/14322 useless extension candidates. Maximal degree in co-relation 48767. Up to 6402 conditions per place. [2023-11-19 07:58:12,014 INFO L140 encePairwiseOnDemand]: 321/327 looper letters, 160 selfloop transitions, 41 changer transitions 0/219 dead transitions. [2023-11-19 07:58:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 219 transitions, 1786 flow [2023-11-19 07:58:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:58:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1160 transitions. [2023-11-19 07:58:12,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067715159458279 [2023-11-19 07:58:12,020 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1160 transitions. [2023-11-19 07:58:12,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1160 transitions. [2023-11-19 07:58:12,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:12,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1160 transitions. [2023-11-19 07:58:12,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.71428571428572) internal successors, (1160), 7 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 07:58:12,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 07:58:12,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 07:58:12,031 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 768 flow. Second operand 7 states and 1160 transitions. [2023-11-19 07:58:12,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 219 transitions, 1786 flow [2023-11-19 07:58:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 219 transitions, 1782 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:12,394 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 896 flow [2023-11-19 07:58:12,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=896, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2023-11-19 07:58:12,397 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-11-19 07:58:12,397 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 896 flow [2023-11-19 07:58:12,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 07:58:12,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:12,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:12,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:12,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:12,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 189623411, now seen corresponding path program 1 times [2023-11-19 07:58:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:12,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855154095] [2023-11-19 07:58:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,507 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 07:58:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:12,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855154095] [2023-11-19 07:58:12,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855154095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:12,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428168446] [2023-11-19 07:58:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:12,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 327 [2023-11-19 07:58:12,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 896 flow. Second operand has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 07:58:12,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:12,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 327 [2023-11-19 07:58:12,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:14,193 INFO L124 PetriNetUnfolderBase]: 5006/9159 cut-off events. [2023-11-19 07:58:14,194 INFO L125 PetriNetUnfolderBase]: For 25138/25990 co-relation queries the response was YES. [2023-11-19 07:58:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 9159 events. 5006/9159 cut-off events. For 25138/25990 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 71931 event pairs, 1046 based on Foata normal form. 864/9595 useless extension candidates. Maximal degree in co-relation 33778. Up to 4480 conditions per place. [2023-11-19 07:58:14,285 INFO L140 encePairwiseOnDemand]: 320/327 looper letters, 120 selfloop transitions, 11 changer transitions 7/175 dead transitions. [2023-11-19 07:58:14,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 1732 flow [2023-11-19 07:58:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:58:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 809 transitions. [2023-11-19 07:58:14,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948012232415902 [2023-11-19 07:58:14,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 809 transitions. [2023-11-19 07:58:14,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 809 transitions. [2023-11-19 07:58:14,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:14,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 809 transitions. [2023-11-19 07:58:14,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:58:14,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states 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 07:58:14,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states 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 07:58:14,300 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 896 flow. Second operand 5 states and 809 transitions. [2023-11-19 07:58:14,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 1732 flow [2023-11-19 07:58:14,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 175 transitions, 1649 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:14,491 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 826 flow [2023-11-19 07:58:14,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2023-11-19 07:58:14,494 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-19 07:58:14,494 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 826 flow [2023-11-19 07:58:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 07:58:14,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:14,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:14,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:14,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2007698411, now seen corresponding path program 1 times [2023-11-19 07:58:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455669354] [2023-11-19 07:58:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,723 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 07:58:14,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455669354] [2023-11-19 07:58:14,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455669354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:14,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:14,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386662690] [2023-11-19 07:58:14,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:14,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:14,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 327 [2023-11-19 07:58:14,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 826 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:58:14,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:14,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 327 [2023-11-19 07:58:14,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:15,509 INFO L124 PetriNetUnfolderBase]: 1367/3060 cut-off events. [2023-11-19 07:58:15,510 INFO L125 PetriNetUnfolderBase]: For 10510/10801 co-relation queries the response was YES. [2023-11-19 07:58:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 3060 events. 1367/3060 cut-off events. For 10510/10801 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 23057 event pairs, 215 based on Foata normal form. 380/3308 useless extension candidates. Maximal degree in co-relation 11973. Up to 1716 conditions per place. [2023-11-19 07:58:15,531 INFO L140 encePairwiseOnDemand]: 317/327 looper letters, 59 selfloop transitions, 16 changer transitions 2/108 dead transitions. [2023-11-19 07:58:15,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 108 transitions, 979 flow [2023-11-19 07:58:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:58:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2023-11-19 07:58:15,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801223241590214 [2023-11-19 07:58:15,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2023-11-19 07:58:15,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2023-11-19 07:58:15,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:15,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2023-11-19 07:58:15,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 07:58:15,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 07:58:15,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 07:58:15,550 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 826 flow. Second operand 4 states and 628 transitions. [2023-11-19 07:58:15,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 108 transitions, 979 flow [2023-11-19 07:58:15,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 108 transitions, 924 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-19 07:58:15,667 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 699 flow [2023-11-19 07:58:15,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=699, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2023-11-19 07:58:15,668 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2023-11-19 07:58:15,668 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 699 flow [2023-11-19 07:58:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:58:15,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:15,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:15,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash 685436414, now seen corresponding path program 1 times [2023-11-19 07:58:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762722740] [2023-11-19 07:58:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,820 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 07:58:15,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762722740] [2023-11-19 07:58:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762722740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082882591] [2023-11-19 07:58:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:15,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:15,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:15,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 327 [2023-11-19 07:58:15,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 699 flow. Second operand has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 07:58:15,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:15,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 327 [2023-11-19 07:58:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:16,716 INFO L124 PetriNetUnfolderBase]: 1665/3571 cut-off events. [2023-11-19 07:58:16,716 INFO L125 PetriNetUnfolderBase]: For 9234/9406 co-relation queries the response was YES. [2023-11-19 07:58:16,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13697 conditions, 3571 events. 1665/3571 cut-off events. For 9234/9406 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 26418 event pairs, 186 based on Foata normal form. 193/3685 useless extension candidates. Maximal degree in co-relation 13662. Up to 1416 conditions per place. [2023-11-19 07:58:16,738 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 163 selfloop transitions, 42 changer transitions 7/228 dead transitions. [2023-11-19 07:58:16,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1903 flow [2023-11-19 07:58:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:58:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:58:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2080 transitions. [2023-11-19 07:58:16,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892966360856269 [2023-11-19 07:58:16,751 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2080 transitions. [2023-11-19 07:58:16,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2080 transitions. [2023-11-19 07:58:16,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:16,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2080 transitions. [2023-11-19 07:58:16,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states 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 07:58:16,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 327.0) internal successors, (4578), 14 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states 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 07:58:16,770 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 327.0) internal successors, (4578), 14 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states 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 07:58:16,771 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 699 flow. Second operand 13 states and 2080 transitions. [2023-11-19 07:58:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1903 flow [2023-11-19 07:58:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 228 transitions, 1801 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:58:16,831 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 870 flow [2023-11-19 07:58:16,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2023-11-19 07:58:16,833 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 56 predicate places. [2023-11-19 07:58:16,833 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 870 flow [2023-11-19 07:58:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 07:58:16,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:16,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:16,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:58:16,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:16,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 605088329, now seen corresponding path program 1 times [2023-11-19 07:58:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786118816] [2023-11-19 07:58:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786118816] [2023-11-19 07:58:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786118816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358237594] [2023-11-19 07:58:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:17,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 327 [2023-11-19 07:58:17,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 07:58:17,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:17,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 327 [2023-11-19 07:58:17,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:17,887 INFO L124 PetriNetUnfolderBase]: 1267/3005 cut-off events. [2023-11-19 07:58:17,887 INFO L125 PetriNetUnfolderBase]: For 11792/12180 co-relation queries the response was YES. [2023-11-19 07:58:17,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12236 conditions, 3005 events. 1267/3005 cut-off events. For 11792/12180 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23518 event pairs, 148 based on Foata normal form. 190/3153 useless extension candidates. Maximal degree in co-relation 12197. Up to 1302 conditions per place. [2023-11-19 07:58:17,910 INFO L140 encePairwiseOnDemand]: 318/327 looper letters, 147 selfloop transitions, 37 changer transitions 21/226 dead transitions. [2023-11-19 07:58:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 226 transitions, 2189 flow [2023-11-19 07:58:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:58:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:58:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2025 transitions. [2023-11-19 07:58:17,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763585038814397 [2023-11-19 07:58:17,918 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2025 transitions. [2023-11-19 07:58:17,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2025 transitions. [2023-11-19 07:58:17,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:17,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2025 transitions. [2023-11-19 07:58:17,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.76923076923077) internal successors, (2025), 13 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states 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 07:58:17,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 327.0) internal successors, (4578), 14 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states 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 07:58:17,937 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 327.0) internal successors, (4578), 14 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states 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 07:58:17,937 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 870 flow. Second operand 13 states and 2025 transitions. [2023-11-19 07:58:17,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 226 transitions, 2189 flow [2023-11-19 07:58:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 226 transitions, 2053 flow, removed 27 selfloop flow, removed 10 redundant places. [2023-11-19 07:58:17,979 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 882 flow [2023-11-19 07:58:17,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=882, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2023-11-19 07:58:17,980 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 61 predicate places. [2023-11-19 07:58:17,981 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 882 flow [2023-11-19 07:58:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 07:58:17,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:17,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:58:17,982 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:17,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -669123160, now seen corresponding path program 1 times [2023-11-19 07:58:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539997369] [2023-11-19 07:58:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,115 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 07:58:18,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539997369] [2023-11-19 07:58:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539997369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477306568] [2023-11-19 07:58:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:18,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 327 [2023-11-19 07:58:18,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 07:58:18,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:18,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 327 [2023-11-19 07:58:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:18,413 INFO L124 PetriNetUnfolderBase]: 327/1107 cut-off events. [2023-11-19 07:58:18,413 INFO L125 PetriNetUnfolderBase]: For 2728/2784 co-relation queries the response was YES. [2023-11-19 07:58:18,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 1107 events. 327/1107 cut-off events. For 2728/2784 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7642 event pairs, 96 based on Foata normal form. 47/1148 useless extension candidates. Maximal degree in co-relation 4148. Up to 446 conditions per place. [2023-11-19 07:58:18,420 INFO L140 encePairwiseOnDemand]: 316/327 looper letters, 37 selfloop transitions, 13 changer transitions 14/80 dead transitions. [2023-11-19 07:58:18,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 80 transitions, 710 flow [2023-11-19 07:58:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:58:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2023-11-19 07:58:18,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709480122324159 [2023-11-19 07:58:18,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2023-11-19 07:58:18,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2023-11-19 07:58:18,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:18,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2023-11-19 07:58:18,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 07:58:18,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 07:58:18,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 07:58:18,430 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 882 flow. Second operand 4 states and 616 transitions. [2023-11-19 07:58:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 80 transitions, 710 flow [2023-11-19 07:58:18,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 586 flow, removed 13 selfloop flow, removed 19 redundant places. [2023-11-19 07:58:18,442 INFO L231 Difference]: Finished difference. Result has 85 places, 56 transitions, 343 flow [2023-11-19 07:58:18,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2023-11-19 07:58:18,444 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-11-19 07:58:18,444 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 343 flow [2023-11-19 07:58:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 07:58:18,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:18,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:58:18,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-19 07:58:18,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 197276356, now seen corresponding path program 1 times [2023-11-19 07:58:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650444217] [2023-11-19 07:58:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,623 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 07:58:18,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:18,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650444217] [2023-11-19 07:58:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650444217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:18,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895958364] [2023-11-19 07:58:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:18,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 327 [2023-11-19 07:58:18,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 07:58:18,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 327 [2023-11-19 07:58:18,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:18,939 INFO L124 PetriNetUnfolderBase]: 186/625 cut-off events. [2023-11-19 07:58:18,939 INFO L125 PetriNetUnfolderBase]: For 1000/1022 co-relation queries the response was YES. [2023-11-19 07:58:18,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 625 events. 186/625 cut-off events. For 1000/1022 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3500 event pairs, 69 based on Foata normal form. 24/639 useless extension candidates. Maximal degree in co-relation 2141. Up to 234 conditions per place. [2023-11-19 07:58:18,941 INFO L140 encePairwiseOnDemand]: 321/327 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-11-19 07:58:18,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 578 flow [2023-11-19 07:58:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:58:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1092 transitions. [2023-11-19 07:58:18,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47706422018348627 [2023-11-19 07:58:18,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1092 transitions. [2023-11-19 07:58:18,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1092 transitions. [2023-11-19 07:58:18,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:18,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1092 transitions. [2023-11-19 07:58:18,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 07:58:18,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 07:58:18,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 07:58:18,956 INFO L175 Difference]: Start difference. First operand has 85 places, 56 transitions, 343 flow. Second operand 7 states and 1092 transitions. [2023-11-19 07:58:18,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 578 flow [2023-11-19 07:58:18,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 510 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-11-19 07:58:18,960 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-11-19 07:58:18,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-11-19 07:58:18,961 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-11-19 07:58:18,961 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-11-19 07:58:18,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 07:58:18,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-11-19 07:58:18,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-19 07:58:18,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-19 07:58:18,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-19 07:58:18,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-19 07:58:18,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-11-19 07:58:18,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-19 07:58:18,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-19 07:58:18,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-19 07:58:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:58:18,969 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,974 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:58:18,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:58:18,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:58:18 BasicIcfg [2023-11-19 07:58:18,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:58:18,979 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:58:18,979 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:58:18,979 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:58:18,980 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:53" (3/4) ... [2023-11-19 07:58:18,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:58:18,985 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-19 07:58:18,985 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2023-11-19 07:58:18,986 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-19 07:58:18,991 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-19 07:58:18,991 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:58:18,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:58:18,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:58:19,077 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:58:19,078 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:58:19,078 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:58:19,079 INFO L158 Benchmark]: Toolchain (without parser) took 26610.26ms. Allocated memory was 136.3MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 87.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 724.8MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,079 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:19,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.87ms. Allocated memory is still 136.3MB. Free memory was 87.6MB in the beginning and 67.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.96ms. Allocated memory is still 136.3MB. Free memory was 67.0MB in the beginning and 64.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,080 INFO L158 Benchmark]: Boogie Preprocessor took 35.25ms. Allocated memory is still 136.3MB. Free memory was 64.5MB in the beginning and 62.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,081 INFO L158 Benchmark]: RCFGBuilder took 576.29ms. Allocated memory was 136.3MB in the beginning and 195.0MB in the end (delta: 58.7MB). Free memory was 62.9MB in the beginning and 164.2MB in the end (delta: -101.2MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,081 INFO L158 Benchmark]: TraceAbstraction took 25220.08ms. Allocated memory was 195.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 163.4MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 734.5MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,082 INFO L158 Benchmark]: Witness Printer took 99.18ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:58:19,084 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.87ms. Allocated memory is still 136.3MB. Free memory was 87.6MB in the beginning and 67.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.96ms. Allocated memory is still 136.3MB. Free memory was 67.0MB in the beginning and 64.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.25ms. Allocated memory is still 136.3MB. Free memory was 64.5MB in the beginning and 62.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.29ms. Allocated memory was 136.3MB in the beginning and 195.0MB in the end (delta: 58.7MB). Free memory was 62.9MB in the beginning and 164.2MB in the end (delta: -101.2MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 25220.08ms. Allocated memory was 195.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 163.4MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 734.5MB. Max. memory is 16.1GB. * Witness Printer took 99.18ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB 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: 6.2s, 172 PlacesBefore, 47 PlacesAfterwards, 167 TransitionsBefore, 39 TransitionsAfterwards, 10714 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 3 ChoiceCompositions, 157 TotalNumberOfCompositions, 20621 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11353, independent: 11030, independent conditional: 0, independent unconditional: 11030, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5973, independent: 5906, independent conditional: 0, independent unconditional: 5906, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11353, independent: 5124, independent conditional: 0, independent unconditional: 5124, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 5973, unknown conditional: 0, unknown unconditional: 5973] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 185, Positive conditional cache size: 0, Positive unconditional cache size: 185, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, 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 7 procedures, 245 locations, 9 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: 25.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1304 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1060 mSDsluCounter, 319 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2759 IncrementalHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 74 mSDtfsCounter, 2759 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=896occurred in iteration=5, InterpolantAutomatonStates: 80, 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 07:58:19,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c7b46-ea37-473c-a73d-c01d98782a37/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