./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/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_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/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_7259c3fc-382a-4259-8f5f-01ea775f527a/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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:22,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:23,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:44:23,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:23,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:23,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:23,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:23,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:23,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:23,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:23,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:23,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:23,149 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:23,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:23,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:23,152 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:23,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:23,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:23,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:23,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:23,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:23,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:23,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:23,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:23,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:23,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:23,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:23,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:23,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:23,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:23,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:23,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:23,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:23,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:23,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:23,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:23,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:23,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:23,164 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:23,164 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_7259c3fc-382a-4259-8f5f-01ea775f527a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2023-11-19 07:44:23,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:23,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:23,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:23,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:23,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:23,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-19 07:44:26,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:26,934 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:26,934 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-19 07:44:26,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/data/c8a9248ea/a110b4d99f2c427c889a353b952a5e86/FLAG748a26748 [2023-11-19 07:44:26,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/data/c8a9248ea/a110b4d99f2c427c889a353b952a5e86 [2023-11-19 07:44:26,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:26,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:26,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:26,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:26,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:26,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:26,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152c7871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:26, skipping insertion in model container [2023-11-19 07:44:26,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:26" (1/1) ... [2023-11-19 07:44:27,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:27,228 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_7259c3fc-382a-4259-8f5f-01ea775f527a/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-19 07:44:27,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:27,254 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:27,293 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_7259c3fc-382a-4259-8f5f-01ea775f527a/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-19 07:44:27,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:27,310 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:27,310 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:27,319 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:27,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27 WrapperNode [2023-11-19 07:44:27,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:27,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:27,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:27,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:27,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,403 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 409 [2023-11-19 07:44:27,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:27,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:27,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:27,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:27,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:27,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:27,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:27,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:27,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (1/1) ... [2023-11-19 07:44:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:27,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:27,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:44:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:44:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:44:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:44:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:44:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:44:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:44:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:44:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:44:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 07:44:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 07:44:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 07:44:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 07:44:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:44:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:44:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:44:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:27,579 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 07:44:27,739 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:27,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:28,468 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:28,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:28,870 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 07:44:28,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:28 BoogieIcfgContainer [2023-11-19 07:44:28,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:28,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:28,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:28,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:28,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:26" (1/3) ... [2023-11-19 07:44:28,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7cd241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:28, skipping insertion in model container [2023-11-19 07:44:28,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:27" (2/3) ... [2023-11-19 07:44:28,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7cd241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:28, skipping insertion in model container [2023-11-19 07:44:28,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:28" (3/3) ... [2023-11-19 07:44:28,896 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-11-19 07:44:28,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:28,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:28,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:44:28,919 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:29,112 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 07:44:29,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 331 transitions, 728 flow [2023-11-19 07:44:29,305 INFO L124 PetriNetUnfolderBase]: 21/285 cut-off events. [2023-11-19 07:44:29,305 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:44:29,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 285 events. 21/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 243. Up to 3 conditions per place. [2023-11-19 07:44:29,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 331 transitions, 728 flow [2023-11-19 07:44:29,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 276 transitions, 600 flow [2023-11-19 07:44:29,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:29,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 276 transitions, 600 flow [2023-11-19 07:44:29,368 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 276 transitions, 600 flow [2023-11-19 07:44:29,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 276 transitions, 600 flow [2023-11-19 07:44:29,485 INFO L124 PetriNetUnfolderBase]: 21/276 cut-off events. [2023-11-19 07:44:29,486 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:44:29,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 276 events. 21/276 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 243. Up to 3 conditions per place. [2023-11-19 07:44:29,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 10188 [2023-11-19 07:44:39,063 INFO L134 LiptonReduction]: Checked pairs total: 32481 [2023-11-19 07:44:39,063 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-19 07:44:39,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:39,088 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;@6be4cb8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:39,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:44:39,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:39,102 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2023-11-19 07:44:39,102 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:44:39,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:39,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:44:39,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:39,110 INFO L85 PathProgramCache]: Analyzing trace with hash -932815207, now seen corresponding path program 1 times [2023-11-19 07:44:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119618896] [2023-11-19 07:44:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,087 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 07:44:40,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:40,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119618896] [2023-11-19 07:44:40,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119618896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:44:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146474025] [2023-11-19 07:44:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:40,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:40,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:44:40,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 586 [2023-11-19 07:44:40,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 07:44:40,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:40,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 586 [2023-11-19 07:44:40,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:43,342 INFO L124 PetriNetUnfolderBase]: 14125/19141 cut-off events. [2023-11-19 07:44:43,342 INFO L125 PetriNetUnfolderBase]: For 2967/2967 co-relation queries the response was YES. [2023-11-19 07:44:43,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40104 conditions, 19141 events. 14125/19141 cut-off events. For 2967/2967 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 100080 event pairs, 8396 based on Foata normal form. 64/13216 useless extension candidates. Maximal degree in co-relation 26419. Up to 11925 conditions per place. [2023-11-19 07:44:43,584 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 40 selfloop transitions, 2 changer transitions 33/99 dead transitions. [2023-11-19 07:44:43,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 441 flow [2023-11-19 07:44:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:44:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1178 transitions. [2023-11-19 07:44:43,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025597269624573 [2023-11-19 07:44:43,612 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1178 transitions. [2023-11-19 07:44:43,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1178 transitions. [2023-11-19 07:44:43,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:43,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1178 transitions. [2023-11-19 07:44:43,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 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 07:44:43,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 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 07:44:43,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 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 07:44:43,649 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 178 flow. Second operand 4 states and 1178 transitions. [2023-11-19 07:44:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 441 flow [2023-11-19 07:44:43,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 379 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-19 07:44:43,774 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 164 flow [2023-11-19 07:44:43,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-11-19 07:44:43,780 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-19 07:44:43,781 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 164 flow [2023-11-19 07:44:43,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 07:44:43,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:43,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:43,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:44:43,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:43,785 INFO L85 PathProgramCache]: Analyzing trace with hash -930408576, now seen corresponding path program 1 times [2023-11-19 07:44:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037934175] [2023-11-19 07:44:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:44:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037934175] [2023-11-19 07:44:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037934175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:44,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:44:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794839724] [2023-11-19 07:44:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:44,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:44,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 586 [2023-11-19 07:44:44,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 278.5) internal successors, (1671), 6 states have internal predecessors, (1671), 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 07:44:44,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:44,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 586 [2023-11-19 07:44:44,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:47,465 INFO L124 PetriNetUnfolderBase]: 15301/20310 cut-off events. [2023-11-19 07:44:47,465 INFO L125 PetriNetUnfolderBase]: For 2936/2936 co-relation queries the response was YES. [2023-11-19 07:44:47,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42780 conditions, 20310 events. 15301/20310 cut-off events. For 2936/2936 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 101450 event pairs, 2786 based on Foata normal form. 1/16026 useless extension candidates. Maximal degree in co-relation 42768. Up to 8315 conditions per place. [2023-11-19 07:44:47,624 INFO L140 encePairwiseOnDemand]: 577/586 looper letters, 117 selfloop transitions, 10 changer transitions 9/160 dead transitions. [2023-11-19 07:44:47,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 160 transitions, 679 flow [2023-11-19 07:44:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1774 transitions. [2023-11-19 07:44:47,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045506257110353 [2023-11-19 07:44:47,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1774 transitions. [2023-11-19 07:44:47,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1774 transitions. [2023-11-19 07:44:47,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:47,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1774 transitions. [2023-11-19 07:44:47,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 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 07:44:47,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:47,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:47,659 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 164 flow. Second operand 6 states and 1774 transitions. [2023-11-19 07:44:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 160 transitions, 679 flow [2023-11-19 07:44:47,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 160 transitions, 667 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:47,681 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 229 flow [2023-11-19 07:44:47,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-11-19 07:44:47,683 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2023-11-19 07:44:47,683 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 229 flow [2023-11-19 07:44:47,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.5) internal successors, (1671), 6 states have internal predecessors, (1671), 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 07:44:47,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:47,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:47,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:47,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:44:47,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1682030698, now seen corresponding path program 2 times [2023-11-19 07:44:47,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:47,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107171215] [2023-11-19 07:44:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:44:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107171215] [2023-11-19 07:44:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107171215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:44:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473739217] [2023-11-19 07:44:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:48,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 586 [2023-11-19 07:44:48,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 278.5) internal successors, (1671), 6 states have internal predecessors, (1671), 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 07:44:48,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:48,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 586 [2023-11-19 07:44:48,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:51,615 INFO L124 PetriNetUnfolderBase]: 15331/20250 cut-off events. [2023-11-19 07:44:51,616 INFO L125 PetriNetUnfolderBase]: For 11495/11495 co-relation queries the response was YES. [2023-11-19 07:44:51,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50345 conditions, 20250 events. 15331/20250 cut-off events. For 11495/11495 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 100026 event pairs, 2734 based on Foata normal form. 1/18808 useless extension candidates. Maximal degree in co-relation 50331. Up to 8295 conditions per place. [2023-11-19 07:44:51,779 INFO L140 encePairwiseOnDemand]: 577/586 looper letters, 112 selfloop transitions, 12 changer transitions 9/157 dead transitions. [2023-11-19 07:44:51,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 157 transitions, 724 flow [2023-11-19 07:44:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1769 transitions. [2023-11-19 07:44:51,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031285551763367 [2023-11-19 07:44:51,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1769 transitions. [2023-11-19 07:44:51,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1769 transitions. [2023-11-19 07:44:51,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:51,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1769 transitions. [2023-11-19 07:44:51,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 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 07:44:51,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:51,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:51,809 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 229 flow. Second operand 6 states and 1769 transitions. [2023-11-19 07:44:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 157 transitions, 724 flow [2023-11-19 07:44:51,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 712 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:51,839 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 274 flow [2023-11-19 07:44:51,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-19 07:44:51,841 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-19 07:44:51,845 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 274 flow [2023-11-19 07:44:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.5) internal successors, (1671), 6 states have internal predecessors, (1671), 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 07:44:51,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:51,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:44:51,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:44:51,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -59690751, now seen corresponding path program 1 times [2023-11-19 07:44:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:51,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964045293] [2023-11-19 07:44:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:52,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964045293] [2023-11-19 07:44:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964045293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018596993] [2023-11-19 07:44:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:52,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:52,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:52,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:44:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:44:52,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:52,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018596993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:52,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:52,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-19 07:44:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960796662] [2023-11-19 07:44:52,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:44:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:44:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:44:52,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-19 07:44:52,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 276.6) internal successors, (2766), 10 states have internal predecessors, (2766), 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 07:44:52,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:52,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-19 07:44:52,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:57,097 INFO L124 PetriNetUnfolderBase]: 21774/30437 cut-off events. [2023-11-19 07:44:57,097 INFO L125 PetriNetUnfolderBase]: For 22455/22455 co-relation queries the response was YES. [2023-11-19 07:44:57,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74599 conditions, 30437 events. 21774/30437 cut-off events. For 22455/22455 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 181954 event pairs, 12507 based on Foata normal form. 875/28934 useless extension candidates. Maximal degree in co-relation 74579. Up to 17849 conditions per place. [2023-11-19 07:44:57,337 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 108 selfloop transitions, 6 changer transitions 1/139 dead transitions. [2023-11-19 07:44:57,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 139 transitions, 715 flow [2023-11-19 07:44:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1726 transitions. [2023-11-19 07:44:57,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908987485779295 [2023-11-19 07:44:57,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1726 transitions. [2023-11-19 07:44:57,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1726 transitions. [2023-11-19 07:44:57,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:57,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1726 transitions. [2023-11-19 07:44:57,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.6666666666667) internal successors, (1726), 6 states have internal predecessors, (1726), 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 07:44:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:57,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:44:57,368 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 274 flow. Second operand 6 states and 1726 transitions. [2023-11-19 07:44:57,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 139 transitions, 715 flow [2023-11-19 07:44:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 693 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:44:57,423 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 326 flow [2023-11-19 07:44:57,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-11-19 07:44:57,425 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2023-11-19 07:44:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 326 flow [2023-11-19 07:44:57,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 276.6) internal successors, (2766), 10 states have internal predecessors, (2766), 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 07:44:57,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:57,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:57,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:57,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:57,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:44:57,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1912841087, now seen corresponding path program 1 times [2023-11-19 07:44:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525741753] [2023-11-19 07:44:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:57,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525741753] [2023-11-19 07:44:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525741753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:57,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107780642] [2023-11-19 07:44:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:57,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:57,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:44:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:58,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:44:58,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:58,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107780642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:58,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:58,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-19 07:44:58,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433700593] [2023-11-19 07:44:58,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:58,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:44:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:44:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:44:58,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-19 07:44:58,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 326 flow. Second operand has 10 states, 10 states have (on average 275.4) internal successors, (2754), 10 states have internal predecessors, (2754), 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 07:44:58,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:58,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-19 07:44:58,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:01,457 INFO L124 PetriNetUnfolderBase]: 17518/24444 cut-off events. [2023-11-19 07:45:01,457 INFO L125 PetriNetUnfolderBase]: For 21307/21307 co-relation queries the response was YES. [2023-11-19 07:45:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61255 conditions, 24444 events. 17518/24444 cut-off events. For 21307/21307 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 141036 event pairs, 9745 based on Foata normal form. 419/23040 useless extension candidates. Maximal degree in co-relation 57967. Up to 17767 conditions per place. [2023-11-19 07:45:01,635 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 68 selfloop transitions, 5 changer transitions 33/130 dead transitions. [2023-11-19 07:45:01,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 683 flow [2023-11-19 07:45:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1722 transitions. [2023-11-19 07:45:01,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48976109215017066 [2023-11-19 07:45:01,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1722 transitions. [2023-11-19 07:45:01,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1722 transitions. [2023-11-19 07:45:01,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:01,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1722 transitions. [2023-11-19 07:45:01,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 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 07:45:01,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:45:01,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:45:01,661 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 326 flow. Second operand 6 states and 1722 transitions. [2023-11-19 07:45:01,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 683 flow [2023-11-19 07:45:01,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:01,719 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 307 flow [2023-11-19 07:45:01,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2023-11-19 07:45:01,722 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2023-11-19 07:45:01,725 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 307 flow [2023-11-19 07:45:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 275.4) internal successors, (2754), 10 states have internal predecessors, (2754), 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 07:45:01,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:01,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:01,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:01,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:01,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:45:01,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1286493870, now seen corresponding path program 2 times [2023-11-19 07:45:01,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:01,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000872437] [2023-11-19 07:45:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:01,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000872437] [2023-11-19 07:45:02,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000872437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105270799] [2023-11-19 07:45:02,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:02,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:02,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:02,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:02,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:02,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:02,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:02,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:45:02,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:02,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105270799] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:02,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:02,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2023-11-19 07:45:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158331985] [2023-11-19 07:45:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:03,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-19 07:45:03,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 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 07:45:03,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:03,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-19 07:45:03,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:05,845 INFO L124 PetriNetUnfolderBase]: 17357/23017 cut-off events. [2023-11-19 07:45:05,846 INFO L125 PetriNetUnfolderBase]: For 19640/19640 co-relation queries the response was YES. [2023-11-19 07:45:05,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60341 conditions, 23017 events. 17357/23017 cut-off events. For 19640/19640 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 117169 event pairs, 4402 based on Foata normal form. 86/21312 useless extension candidates. Maximal degree in co-relation 60303. Up to 9101 conditions per place. [2023-11-19 07:45:06,014 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 97 selfloop transitions, 11 changer transitions 2/134 dead transitions. [2023-11-19 07:45:06,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 134 transitions, 685 flow [2023-11-19 07:45:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1730 transitions. [2023-11-19 07:45:06,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920364050056883 [2023-11-19 07:45:06,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1730 transitions. [2023-11-19 07:45:06,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1730 transitions. [2023-11-19 07:45:06,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:06,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1730 transitions. [2023-11-19 07:45:06,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.3333333333333) internal successors, (1730), 6 states have internal predecessors, (1730), 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 07:45:06,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:45:06,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 07:45:06,038 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 307 flow. Second operand 6 states and 1730 transitions. [2023-11-19 07:45:06,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 134 transitions, 685 flow [2023-11-19 07:45:06,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 646 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-19 07:45:06,089 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 294 flow [2023-11-19 07:45:06,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2023-11-19 07:45:06,090 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2023-11-19 07:45:06,090 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 294 flow [2023-11-19 07:45:06,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 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 07:45:06,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:06,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:06,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:45:06,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:45:06,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -725460639, now seen corresponding path program 1 times [2023-11-19 07:45:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46137484] [2023-11-19 07:45:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:06,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:06,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46137484] [2023-11-19 07:45:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46137484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:06,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66938094] [2023-11-19 07:45:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:06,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:06,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:06,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:06,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:45:06,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:07,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66938094] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2023-11-19 07:45:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921783083] [2023-11-19 07:45:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:07,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:07,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-19 07:45:07,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 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 07:45:07,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:07,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-19 07:45:07,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:10,499 INFO L124 PetriNetUnfolderBase]: 20126/26303 cut-off events. [2023-11-19 07:45:10,500 INFO L125 PetriNetUnfolderBase]: For 22853/22853 co-relation queries the response was YES. [2023-11-19 07:45:10,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72081 conditions, 26303 events. 20126/26303 cut-off events. For 22853/22853 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 131384 event pairs, 3257 based on Foata normal form. 90/24528 useless extension candidates. Maximal degree in co-relation 72047. Up to 9050 conditions per place. [2023-11-19 07:45:10,666 INFO L140 encePairwiseOnDemand]: 579/586 looper letters, 118 selfloop transitions, 14 changer transitions 4/160 dead transitions. [2023-11-19 07:45:10,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 826 flow [2023-11-19 07:45:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:45:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2029 transitions. [2023-11-19 07:45:10,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946367625548513 [2023-11-19 07:45:10,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2029 transitions. [2023-11-19 07:45:10,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2029 transitions. [2023-11-19 07:45:10,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:10,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2029 transitions. [2023-11-19 07:45:10,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.85714285714283) internal successors, (2029), 7 states have internal predecessors, (2029), 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 07:45:10,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 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 07:45:10,692 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 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 07:45:10,692 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 294 flow. Second operand 7 states and 2029 transitions. [2023-11-19 07:45:10,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 826 flow [2023-11-19 07:45:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 766 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-19 07:45:10,854 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 310 flow [2023-11-19 07:45:10,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-19 07:45:10,855 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2023-11-19 07:45:10,855 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 310 flow [2023-11-19 07:45:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 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 07:45:10,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:10,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:10,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7259c3fc-382a-4259-8f5f-01ea775f527a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:45:11,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:45:11,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1261050219, now seen corresponding path program 1 times [2023-11-19 07:45:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070904770] [2023-11-19 07:45:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms