./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/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_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/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_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:03,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:03,331 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:03,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:03,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:03,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:03,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:03,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:03,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:03,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:03,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:03,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:03,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:03,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:03,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:03,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:03,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:03,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:03,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:03,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:03,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:03,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:03,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:03,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:03,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:03,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:03,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:03,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:03,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:03,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:03,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:03,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:03,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:03,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:03,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:03,377 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:03,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:03,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:03,378 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:03,379 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_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2023-11-19 07:37:03,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:03,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:03,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:03,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:03,662 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:03,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/triangular-1.i [2023-11-19 07:37:06,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:07,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:07,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/sv-benchmarks/c/pthread/triangular-1.i [2023-11-19 07:37:07,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/data/2c4d40adb/e5e7e6c478224c798deb90996f46bf4b/FLAGfb608bba5 [2023-11-19 07:37:07,218 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/data/2c4d40adb/e5e7e6c478224c798deb90996f46bf4b [2023-11-19 07:37:07,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:07,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:07,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:07,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:07,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:07,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aafc466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07, skipping insertion in model container [2023-11-19 07:37:07,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:07,716 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_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2023-11-19 07:37:07,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:07,733 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:07,802 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_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2023-11-19 07:37:07,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:07,843 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:07,843 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:07,852 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:07,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07 WrapperNode [2023-11-19 07:37:07,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:07,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:07,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:07,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:07,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,903 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-19 07:37:07,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:07,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:07,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:07,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:07,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:07,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:07,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:07,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:07,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (1/1) ... [2023-11-19 07:37:07,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:07,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:07,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:37:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:37:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:37:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:37:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:37:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:37:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:08,024 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:37:08,193 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:08,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:08,357 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:08,366 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:08,366 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:37:08,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:08 BoogieIcfgContainer [2023-11-19 07:37:08,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:08,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:08,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:08,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:08,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:07" (1/3) ... [2023-11-19 07:37:08,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bed585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:08, skipping insertion in model container [2023-11-19 07:37:08,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:07" (2/3) ... [2023-11-19 07:37:08,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bed585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:08, skipping insertion in model container [2023-11-19 07:37:08,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:08" (3/3) ... [2023-11-19 07:37:08,380 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-19 07:37:08,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:37:08,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:08,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:08,410 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:08,487 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:37:08,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 146 flow [2023-11-19 07:37:08,579 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-19 07:37:08,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:08,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-19 07:37:08,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 69 transitions, 146 flow [2023-11-19 07:37:08,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 140 flow [2023-11-19 07:37:08,596 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:08,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-19 07:37:08,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-19 07:37:08,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 140 flow [2023-11-19 07:37:08,643 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-19 07:37:08,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:08,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-19 07:37:08,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 1296 [2023-11-19 07:37:11,201 INFO L134 LiptonReduction]: Checked pairs total: 1192 [2023-11-19 07:37:11,202 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-19 07:37:11,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:11,239 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;@6a42b66d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:11,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 07:37:11,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:11,253 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-19 07:37:11,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:11,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:11,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:37:11,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:11,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -425197577, now seen corresponding path program 1 times [2023-11-19 07:37:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376270670] [2023-11-19 07:37:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376270670] [2023-11-19 07:37:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376270670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:11,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:11,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361520565] [2023-11-19 07:37:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:11,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 131 [2023-11-19 07:37:11,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:11,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:11,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 131 [2023-11-19 07:37:11,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:11,978 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-11-19 07:37:11,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:37:11,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 384 event pairs, 23 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-11-19 07:37:11,982 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-11-19 07:37:11,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-11-19 07:37:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-11-19 07:37:11,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48282442748091603 [2023-11-19 07:37:11,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-11-19 07:37:11,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-11-19 07:37:12,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:12,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-11-19 07:37:12,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,015 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 253 transitions. [2023-11-19 07:37:12,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-11-19 07:37:12,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:12,020 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-11-19 07:37:12,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-19 07:37:12,026 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-11-19 07:37:12,027 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-11-19 07:37:12,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:12,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:12,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:12,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:12,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash -593367787, now seen corresponding path program 1 times [2023-11-19 07:37:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177338504] [2023-11-19 07:37:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177338504] [2023-11-19 07:37:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177338504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131653332] [2023-11-19 07:37:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:12,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:12,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:12,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:12,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:12,408 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-11-19 07:37:12,408 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-19 07:37:12,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-11-19 07:37:12,411 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-11-19 07:37:12,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-11-19 07:37:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2023-11-19 07:37:12,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681933842239186 [2023-11-19 07:37:12,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 368 transitions. [2023-11-19 07:37:12,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 368 transitions. [2023-11-19 07:37:12,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:12,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 368 transitions. [2023-11-19 07:37:12,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.333333333333336) internal successors, (368), 6 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,423 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,423 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 368 transitions. [2023-11-19 07:37:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-11-19 07:37:12,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:12,426 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-11-19 07:37:12,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-19 07:37:12,427 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-11-19 07:37:12,427 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-11-19 07:37:12,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:12,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:12,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:37:12,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:12,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash -593353837, now seen corresponding path program 2 times [2023-11-19 07:37:12,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158347893] [2023-11-19 07:37:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158347893] [2023-11-19 07:37:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158347893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:12,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536173358] [2023-11-19 07:37:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:12,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:12,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:12,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:12,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:12,805 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-19 07:37:12,805 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 07:37:12,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 618 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-11-19 07:37:12,809 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-11-19 07:37:12,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-11-19 07:37:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:12,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2023-11-19 07:37:12,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47022900763358777 [2023-11-19 07:37:12,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 308 transitions. [2023-11-19 07:37:12,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 308 transitions. [2023-11-19 07:37:12,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:12,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 308 transitions. [2023-11-19 07:37:12,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,818 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 308 transitions. [2023-11-19 07:37:12,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-11-19 07:37:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:12,824 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-11-19 07:37:12,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-19 07:37:12,825 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-19 07:37:12,825 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-11-19 07:37:12,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:12,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:37:12,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:12,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1274942511, now seen corresponding path program 1 times [2023-11-19 07:37:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422676506] [2023-11-19 07:37:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422676506] [2023-11-19 07:37:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422676506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970045049] [2023-11-19 07:37:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:13,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:13,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:13,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:13,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:13,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:13,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:13,267 INFO L124 PetriNetUnfolderBase]: 126/219 cut-off events. [2023-11-19 07:37:13,267 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2023-11-19 07:37:13,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 219 events. 126/219 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 714 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 772. Up to 86 conditions per place. [2023-11-19 07:37:13,273 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-11-19 07:37:13,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2023-11-19 07:37:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:37:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2023-11-19 07:37:13,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46395250212044103 [2023-11-19 07:37:13,277 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2023-11-19 07:37:13,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2023-11-19 07:37:13,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:13,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2023-11-19 07:37:13,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,286 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 547 transitions. [2023-11-19 07:37:13,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2023-11-19 07:37:13,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-19 07:37:13,295 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2023-11-19 07:37:13,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:37:13,298 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-11-19 07:37:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2023-11-19 07:37:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:13,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:13,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:37:13,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:13,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1275101541, now seen corresponding path program 2 times [2023-11-19 07:37:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466511475] [2023-11-19 07:37:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466511475] [2023-11-19 07:37:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466511475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:13,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:13,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918872453] [2023-11-19 07:37:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:13,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:13,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:13,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:13,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:13,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:13,651 INFO L124 PetriNetUnfolderBase]: 162/283 cut-off events. [2023-11-19 07:37:13,651 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2023-11-19 07:37:13,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 283 events. 162/283 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 956 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1066. Up to 77 conditions per place. [2023-11-19 07:37:13,655 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-11-19 07:37:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2023-11-19 07:37:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:37:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 486 transitions. [2023-11-19 07:37:13,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637404580152672 [2023-11-19 07:37:13,659 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 486 transitions. [2023-11-19 07:37:13,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 486 transitions. [2023-11-19 07:37:13,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:13,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 486 transitions. [2023-11-19 07:37:13,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.75) internal successors, (486), 8 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,665 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,666 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 486 transitions. [2023-11-19 07:37:13,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2023-11-19 07:37:13,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:13,673 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2023-11-19 07:37:13,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-19 07:37:13,674 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-11-19 07:37:13,675 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2023-11-19 07:37:13,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:13,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:13,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:37:13,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:13,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1305502311, now seen corresponding path program 3 times [2023-11-19 07:37:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544056337] [2023-11-19 07:37:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:13,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544056337] [2023-11-19 07:37:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544056337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:13,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637032147] [2023-11-19 07:37:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:13,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:13,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:13,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:13,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:13,973 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-19 07:37:13,974 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2023-11-19 07:37:13,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 263 events. 150/263 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 884 event pairs, 22 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1163. Up to 65 conditions per place. [2023-11-19 07:37:13,977 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 20 changer transitions 8/58 dead transitions. [2023-11-19 07:37:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 566 flow [2023-11-19 07:37:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:37:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:37:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 425 transitions. [2023-11-19 07:37:13,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46346782988004365 [2023-11-19 07:37:13,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 425 transitions. [2023-11-19 07:37:13,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 425 transitions. [2023-11-19 07:37:13,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:13,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 425 transitions. [2023-11-19 07:37:13,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,987 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,987 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 7 states and 425 transitions. [2023-11-19 07:37:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 566 flow [2023-11-19 07:37:13,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 531 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:13,997 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 388 flow [2023-11-19 07:37:13,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-11-19 07:37:13,998 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2023-11-19 07:37:13,998 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 388 flow [2023-11-19 07:37:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:13,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:13,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:37:14,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1815886077, now seen corresponding path program 4 times [2023-11-19 07:37:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216315143] [2023-11-19 07:37:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216315143] [2023-11-19 07:37:14,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216315143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807743365] [2023-11-19 07:37:14,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:37:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:14,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:14,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:14,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:14,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:37:14,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:14,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:37:14,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:14,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807743365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:14,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:37:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498927283] [2023-11-19 07:37:14,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:14,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:14,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 388 flow. Second operand has 12 states, 12 states have (on average 56.916666666666664) internal successors, (683), 12 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:14,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:14,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:14,932 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-11-19 07:37:14,932 INFO L125 PetriNetUnfolderBase]: For 2136/2136 co-relation queries the response was YES. [2023-11-19 07:37:14,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 343 events. 198/343 cut-off events. For 2136/2136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1141 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1628. Up to 87 conditions per place. [2023-11-19 07:37:14,937 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-11-19 07:37:14,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 946 flow [2023-11-19 07:37:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:37:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 07:37:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 844 transitions. [2023-11-19 07:37:14,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460196292257361 [2023-11-19 07:37:14,942 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 844 transitions. [2023-11-19 07:37:14,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 844 transitions. [2023-11-19 07:37:14,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:14,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 844 transitions. [2023-11-19 07:37:14,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 60.285714285714285) internal successors, (844), 14 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,953 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,953 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 388 flow. Second operand 14 states and 844 transitions. [2023-11-19 07:37:14,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 946 flow [2023-11-19 07:37:14,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 884 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-19 07:37:14,965 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 689 flow [2023-11-19 07:37:14,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=689, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-11-19 07:37:14,966 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-19 07:37:14,966 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 689 flow [2023-11-19 07:37:14,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 56.916666666666664) internal successors, (683), 12 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:14,968 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:14,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:15,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:15,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:15,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 173906857, now seen corresponding path program 5 times [2023-11-19 07:37:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:15,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188327644] [2023-11-19 07:37:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:15,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:15,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188327644] [2023-11-19 07:37:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188327644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:15,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46895440] [2023-11-19 07:37:15,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:37:15,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:15,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:15,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:15,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 07:37:15,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:15,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:37:15,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:15,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:15,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46895440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:15,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:15,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 07:37:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987095863] [2023-11-19 07:37:15,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:37:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:37:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:37:15,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:15,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 689 flow. Second operand has 16 states, 16 states have (on average 56.8125) internal successors, (909), 16 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:15,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:15,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:15,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:16,142 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-11-19 07:37:16,142 INFO L125 PetriNetUnfolderBase]: For 4621/4621 co-relation queries the response was YES. [2023-11-19 07:37:16,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 455 events. 254/455 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1591 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2400. Up to 249 conditions per place. [2023-11-19 07:37:16,148 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-11-19 07:37:16,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1455 flow [2023-11-19 07:37:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:37:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:37:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 963 transitions. [2023-11-19 07:37:16,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594465648854962 [2023-11-19 07:37:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 963 transitions. [2023-11-19 07:37:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 963 transitions. [2023-11-19 07:37:16,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:16,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 963 transitions. [2023-11-19 07:37:16,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 60.1875) internal successors, (963), 16 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:16,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:16,164 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:16,164 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 689 flow. Second operand 16 states and 963 transitions. [2023-11-19 07:37:16,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1455 flow [2023-11-19 07:37:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 1094 flow, removed 167 selfloop flow, removed 5 redundant places. [2023-11-19 07:37:16,187 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 762 flow [2023-11-19 07:37:16,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=762, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-11-19 07:37:16,188 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-19 07:37:16,188 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 762 flow [2023-11-19 07:37:16,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.8125) internal successors, (909), 16 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:16,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:16,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:16,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:16,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:16,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:16,408 INFO L85 PathProgramCache]: Analyzing trace with hash 118604779, now seen corresponding path program 6 times [2023-11-19 07:37:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:16,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327897092] [2023-11-19 07:37:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:16,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327897092] [2023-11-19 07:37:16,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327897092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764865120] [2023-11-19 07:37:16,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:37:16,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:16,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:16,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:16,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:16,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-19 07:37:16,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:16,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:37:16,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:16,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764865120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:17,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:37:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144175369] [2023-11-19 07:37:17,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:37:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:37:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:17,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:17,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 762 flow. Second operand has 17 states, 17 states have (on average 56.8235294117647) internal successors, (966), 17 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:17,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:17,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:17,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:17,713 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-11-19 07:37:17,713 INFO L125 PetriNetUnfolderBase]: For 12692/12692 co-relation queries the response was YES. [2023-11-19 07:37:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 747 events. 408/747 cut-off events. For 12692/12692 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3260 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 3987. Up to 227 conditions per place. [2023-11-19 07:37:17,721 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-11-19 07:37:17,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 181 transitions, 2078 flow [2023-11-19 07:37:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:37:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 07:37:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1324 transitions. [2023-11-19 07:37:17,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594031922276197 [2023-11-19 07:37:17,728 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1324 transitions. [2023-11-19 07:37:17,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1324 transitions. [2023-11-19 07:37:17,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:17,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1324 transitions. [2023-11-19 07:37:17,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 60.18181818181818) internal successors, (1324), 22 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:17,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:17,742 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:17,743 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 762 flow. Second operand 22 states and 1324 transitions. [2023-11-19 07:37:17,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 181 transitions, 2078 flow [2023-11-19 07:37:17,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 181 transitions, 1986 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-11-19 07:37:17,788 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 1489 flow [2023-11-19 07:37:17,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1489, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2023-11-19 07:37:17,790 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-19 07:37:17,790 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 1489 flow [2023-11-19 07:37:17,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.8235294117647) internal successors, (966), 17 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:17,791 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:17,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:18,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:18,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:18,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1404710505, now seen corresponding path program 7 times [2023-11-19 07:37:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22702949] [2023-11-19 07:37:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22702949] [2023-11-19 07:37:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22702949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394559346] [2023-11-19 07:37:18,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:37:18,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:18,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:18,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:37:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:18,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:37:18,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:18,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394559346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:18,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:18,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 07:37:18,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997988957] [2023-11-19 07:37:18,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:37:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:18,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:37:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:37:18,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:18,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 1489 flow. Second operand has 16 states, 16 states have (on average 56.8125) internal successors, (909), 16 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:18,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:18,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:18,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:19,240 INFO L124 PetriNetUnfolderBase]: 632/1131 cut-off events. [2023-11-19 07:37:19,240 INFO L125 PetriNetUnfolderBase]: For 36478/36478 co-relation queries the response was YES. [2023-11-19 07:37:19,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7982 conditions, 1131 events. 632/1131 cut-off events. For 36478/36478 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5406 event pairs, 26 based on Foata normal form. 32/1163 useless extension candidates. Maximal degree in co-relation 7923. Up to 363 conditions per place. [2023-11-19 07:37:19,255 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-11-19 07:37:19,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 250 transitions, 3773 flow [2023-11-19 07:37:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 07:37:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-19 07:37:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1565 transitions. [2023-11-19 07:37:19,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45948326482677626 [2023-11-19 07:37:19,263 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1565 transitions. [2023-11-19 07:37:19,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1565 transitions. [2023-11-19 07:37:19,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:19,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1565 transitions. [2023-11-19 07:37:19,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 60.19230769230769) internal successors, (1565), 26 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:19,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 131.0) internal successors, (3537), 27 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:19,280 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 131.0) internal successors, (3537), 27 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:19,280 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 1489 flow. Second operand 26 states and 1565 transitions. [2023-11-19 07:37:19,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 250 transitions, 3773 flow [2023-11-19 07:37:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 250 transitions, 3441 flow, removed 152 selfloop flow, removed 7 redundant places. [2023-11-19 07:37:19,385 INFO L231 Difference]: Finished difference. Result has 152 places, 161 transitions, 2619 flow [2023-11-19 07:37:19,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2619, PETRI_PLACES=152, PETRI_TRANSITIONS=161} [2023-11-19 07:37:19,387 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 134 predicate places. [2023-11-19 07:37:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 161 transitions, 2619 flow [2023-11-19 07:37:19,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.8125) internal successors, (909), 16 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:19,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:19,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:19,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:37:19,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:19,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1383414637, now seen corresponding path program 8 times [2023-11-19 07:37:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:19,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306445444] [2023-11-19 07:37:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306445444] [2023-11-19 07:37:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306445444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029874791] [2023-11-19 07:37:19,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:37:19,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:19,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:19,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:37:20,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:37:20,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:20,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:37:20,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:20,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029874791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:20,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:20,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 07:37:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357697914] [2023-11-19 07:37:20,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:20,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:37:20,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:37:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:37:20,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 131 [2023-11-19 07:37:20,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 161 transitions, 2619 flow. Second operand has 24 states, 24 states have (on average 56.458333333333336) internal successors, (1355), 24 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:20,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 131 [2023-11-19 07:37:20,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:21,294 INFO L124 PetriNetUnfolderBase]: 872/1543 cut-off events. [2023-11-19 07:37:21,294 INFO L125 PetriNetUnfolderBase]: For 75654/75654 co-relation queries the response was YES. [2023-11-19 07:37:21,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13830 conditions, 1543 events. 872/1543 cut-off events. For 75654/75654 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7711 event pairs, 33 based on Foata normal form. 20/1563 useless extension candidates. Maximal degree in co-relation 13757. Up to 514 conditions per place. [2023-11-19 07:37:21,318 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 74 selfloop transitions, 184 changer transitions 36/294 dead transitions. [2023-11-19 07:37:21,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 294 transitions, 6114 flow [2023-11-19 07:37:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:37:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:37:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1380 transitions. [2023-11-19 07:37:21,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580152671755725 [2023-11-19 07:37:21,322 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1380 transitions. [2023-11-19 07:37:21,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1380 transitions. [2023-11-19 07:37:21,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:21,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1380 transitions. [2023-11-19 07:37:21,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 60.0) internal successors, (1380), 23 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:21,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:21,333 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:21,333 INFO L175 Difference]: Start difference. First operand has 152 places, 161 transitions, 2619 flow. Second operand 23 states and 1380 transitions. [2023-11-19 07:37:21,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 294 transitions, 6114 flow [2023-11-19 07:37:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 294 transitions, 4445 flow, removed 813 selfloop flow, removed 9 redundant places. [2023-11-19 07:37:21,601 INFO L231 Difference]: Finished difference. Result has 174 places, 232 transitions, 3827 flow [2023-11-19 07:37:21,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3827, PETRI_PLACES=174, PETRI_TRANSITIONS=232} [2023-11-19 07:37:21,602 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 156 predicate places. [2023-11-19 07:37:21,603 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 232 transitions, 3827 flow [2023-11-19 07:37:21,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.458333333333336) internal successors, (1355), 24 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:21,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:21,604 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:21,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:21,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:37:21,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:21,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:21,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1395060127, now seen corresponding path program 9 times [2023-11-19 07:37:21,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:21,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468426938] [2023-11-19 07:37:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468426938] [2023-11-19 07:37:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468426938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902027996] [2023-11-19 07:37:21,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:37:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:21,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:21,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:22,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 07:37:22,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:22,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:37:22,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:22,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902027996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:22,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-19 07:37:22,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941478398] [2023-11-19 07:37:22,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:22,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:37:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:37:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:22,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2023-11-19 07:37:22,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 3827 flow. Second operand has 8 states, 8 states have (on average 60.375) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:22,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2023-11-19 07:37:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:23,215 INFO L124 PetriNetUnfolderBase]: 1745/2892 cut-off events. [2023-11-19 07:37:23,215 INFO L125 PetriNetUnfolderBase]: For 108286/108286 co-relation queries the response was YES. [2023-11-19 07:37:23,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20533 conditions, 2892 events. 1745/2892 cut-off events. For 108286/108286 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16246 event pairs, 84 based on Foata normal form. 283/3175 useless extension candidates. Maximal degree in co-relation 20460. Up to 1258 conditions per place. [2023-11-19 07:37:23,253 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 39 selfloop transitions, 15 changer transitions 596/650 dead transitions. [2023-11-19 07:37:23,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 650 transitions, 11436 flow [2023-11-19 07:37:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:37:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 511 transitions. [2023-11-19 07:37:23,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48759541984732824 [2023-11-19 07:37:23,256 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 511 transitions. [2023-11-19 07:37:23,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 511 transitions. [2023-11-19 07:37:23,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:23,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 511 transitions. [2023-11-19 07:37:23,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,263 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,263 INFO L175 Difference]: Start difference. First operand has 174 places, 232 transitions, 3827 flow. Second operand 8 states and 511 transitions. [2023-11-19 07:37:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 650 transitions, 11436 flow [2023-11-19 07:37:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 650 transitions, 10209 flow, removed 506 selfloop flow, removed 7 redundant places. [2023-11-19 07:37:23,695 INFO L231 Difference]: Finished difference. Result has 172 places, 39 transitions, 488 flow [2023-11-19 07:37:23,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=172, PETRI_TRANSITIONS=39} [2023-11-19 07:37:23,697 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 154 predicate places. [2023-11-19 07:37:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 39 transitions, 488 flow [2023-11-19 07:37:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.375) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:23,698 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:23,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:37:23,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:37:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -939463659, now seen corresponding path program 10 times [2023-11-19 07:37:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831742927] [2023-11-19 07:37:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:24,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831742927] [2023-11-19 07:37:24,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831742927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874653144] [2023-11-19 07:37:24,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:37:24,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:24,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:24,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:24,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:24,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:37:24,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:24,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:37:24,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:24,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:24,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874653144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:24,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-19 07:37:24,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578038802] [2023-11-19 07:37:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:24,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:37:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:37:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:24,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2023-11-19 07:37:24,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 39 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 60.375) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:24,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2023-11-19 07:37:24,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:24,357 INFO L124 PetriNetUnfolderBase]: 109/245 cut-off events. [2023-11-19 07:37:24,358 INFO L125 PetriNetUnfolderBase]: For 6561/6561 co-relation queries the response was YES. [2023-11-19 07:37:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 245 events. 109/245 cut-off events. For 6561/6561 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 901 event pairs, 7 based on Foata normal form. 30/275 useless extension candidates. Maximal degree in co-relation 1722. Up to 123 conditions per place. [2023-11-19 07:37:24,362 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2023-11-19 07:37:24,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1505 flow [2023-11-19 07:37:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:37:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 509 transitions. [2023-11-19 07:37:24,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856870229007634 [2023-11-19 07:37:24,365 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 509 transitions. [2023-11-19 07:37:24,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 509 transitions. [2023-11-19 07:37:24,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:24,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 509 transitions. [2023-11-19 07:37:24,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.625) internal successors, (509), 8 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,371 INFO L175 Difference]: Start difference. First operand has 172 places, 39 transitions, 488 flow. Second operand 8 states and 509 transitions. [2023-11-19 07:37:24,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1505 flow [2023-11-19 07:37:24,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 1021 flow, removed 132 selfloop flow, removed 30 redundant places. [2023-11-19 07:37:24,386 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2023-11-19 07:37:24,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2023-11-19 07:37:24,387 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 73 predicate places. [2023-11-19 07:37:24,387 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2023-11-19 07:37:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.375) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 07:37:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-19 07:37:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 07:37:24,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:24,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:37:24,606 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1] [2023-11-19 07:37:24,609 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:37:24,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:37:24,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:37:24 BasicIcfg [2023-11-19 07:37:24,616 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:37:24,617 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:37:24,617 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:37:24,617 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:37:24,618 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:08" (3/4) ... [2023-11-19 07:37:24,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:37:24,626 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-19 07:37:24,627 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-19 07:37:24,632 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 07:37:24,632 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:37:24,633 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:37:24,633 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:37:24,720 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:37:24,720 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:37:24,721 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:37:24,721 INFO L158 Benchmark]: Toolchain (without parser) took 17498.23ms. Allocated memory was 102.8MB in the beginning and 348.1MB in the end (delta: 245.4MB). Free memory was 48.3MB in the beginning and 189.3MB in the end (delta: -141.0MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,722 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:24,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.28ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 48.1MB in the beginning and 97.7MB in the end (delta: -49.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 140.5MB. Free memory was 97.7MB in the beginning and 96.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,723 INFO L158 Benchmark]: Boogie Preprocessor took 31.40ms. Allocated memory is still 140.5MB. Free memory was 96.0MB in the beginning and 94.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,723 INFO L158 Benchmark]: RCFGBuilder took 434.19ms. Allocated memory is still 140.5MB. Free memory was 94.4MB in the beginning and 81.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,724 INFO L158 Benchmark]: TraceAbstraction took 16243.10ms. Allocated memory was 140.5MB in the beginning and 348.1MB in the end (delta: 207.6MB). Free memory was 80.9MB in the beginning and 193.5MB in the end (delta: -112.6MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,724 INFO L158 Benchmark]: Witness Printer took 103.84ms. Allocated memory is still 348.1MB. Free memory was 193.5MB in the beginning and 189.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:37:24,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.28ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 48.1MB in the beginning and 97.7MB in the end (delta: -49.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 140.5MB. Free memory was 97.7MB in the beginning and 96.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.40ms. Allocated memory is still 140.5MB. Free memory was 96.0MB in the beginning and 94.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.19ms. Allocated memory is still 140.5MB. Free memory was 94.4MB in the beginning and 81.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16243.10ms. Allocated memory was 140.5MB in the beginning and 348.1MB in the end (delta: 207.6MB). Free memory was 80.9MB in the beginning and 193.5MB in the end (delta: -112.6MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. * Witness Printer took 103.84ms. Allocated memory is still 348.1MB. Free memory was 193.5MB in the beginning and 189.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1045, independent: 1015, independent conditional: 0, independent unconditional: 1015, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 695, independent: 684, independent conditional: 0, independent unconditional: 684, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1045, independent: 331, independent conditional: 0, independent unconditional: 331, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 695, unknown conditional: 0, unknown unconditional: 695] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: 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 5 procedures, 89 locations, 3 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: 16.1s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1335 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1233 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2401 IncrementalHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 51 mSDtfsCounter, 2401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3827occurred in iteration=11, InterpolantAutomatonStates: 156, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 268 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1199 SizeOfPredicates, 27 NumberOfNonLiveVariables, 924 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 99/214 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:37:24,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88092823-ecb0-4e5c-a2b1-fbd33b7948f7/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