./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:52,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:52,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:52,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:52,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:52,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:52,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:52,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:52,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:52,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:52,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:52,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:52,943 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:52,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:52,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:52,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:52,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:52,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:52,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:52,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:52,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:52,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:52,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:52,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:52,951 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:52,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:52,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:52,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:52,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:52,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:52,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:52,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:52,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:52,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:52,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:52,956 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:52,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:52,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:52,958 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:52,958 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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2023-11-19 07:33:53,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:53,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:53,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:53,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:53,309 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:53,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-19 07:33:56,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:56,737 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:56,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-19 07:33:56,748 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/data/601aaddbb/946f5f9826ac44a6b389762f172e6249/FLAG4043ff7ba [2023-11-19 07:33:56,763 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/data/601aaddbb/946f5f9826ac44a6b389762f172e6249 [2023-11-19 07:33:56,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:56,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:56,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:56,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:56,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:56,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:56" (1/1) ... [2023-11-19 07:33:56,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a8eabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:56, skipping insertion in model container [2023-11-19 07:33:56,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:56" (1/1) ... [2023-11-19 07:33:56,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:57,055 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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2023-11-19 07:33:57,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:57,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:57,101 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_59acb617-7f41-4980-8f5d-a0dc2529dc6b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2023-11-19 07:33:57,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:57,114 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:57,114 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:57,123 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:57,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57 WrapperNode [2023-11-19 07:33:57,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:57,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:57,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:57,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:57,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,168 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2023-11-19 07:33:57,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:57,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:57,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:57,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:57,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:57,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:57,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:57,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:57,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:57,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:57,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:33:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:33:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:33:57,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:33:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:33:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:33:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:33:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:33:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:33:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:33:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:33:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:57,284 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 07:33:57,395 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:57,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:57,735 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:57,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:57,792 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:33:57,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:57 BoogieIcfgContainer [2023-11-19 07:33:57,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:57,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:57,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:57,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:57,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:56" (1/3) ... [2023-11-19 07:33:57,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec43ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:57, skipping insertion in model container [2023-11-19 07:33:57,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (2/3) ... [2023-11-19 07:33:57,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec43ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:57, skipping insertion in model container [2023-11-19 07:33:57,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:57" (3/3) ... [2023-11-19 07:33:57,813 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-19 07:33:57,825 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:33:57,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:57,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:33:57,834 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:33:57,936 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:33:57,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 237 transitions, 495 flow [2023-11-19 07:33:58,118 INFO L124 PetriNetUnfolderBase]: 20/234 cut-off events. [2023-11-19 07:33:58,118 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:33:58,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 234 events. 20/234 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-11-19 07:33:58,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 237 transitions, 495 flow [2023-11-19 07:33:58,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 223 transitions, 464 flow [2023-11-19 07:33:58,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:58,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 223 transitions, 464 flow [2023-11-19 07:33:58,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 223 transitions, 464 flow [2023-11-19 07:33:58,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 223 transitions, 464 flow [2023-11-19 07:33:58,272 INFO L124 PetriNetUnfolderBase]: 20/223 cut-off events. [2023-11-19 07:33:58,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:33:58,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 20/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 174 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-11-19 07:33:58,278 INFO L119 LiptonReduction]: Number of co-enabled transitions 2346 [2023-11-19 07:34:06,220 INFO L134 LiptonReduction]: Checked pairs total: 2852 [2023-11-19 07:34:06,221 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-11-19 07:34:06,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:06,243 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;@5f946856, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:06,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:34:06,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:06,252 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-19 07:34:06,252 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:06,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:06,253 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] [2023-11-19 07:34:06,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:06,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 156768027, now seen corresponding path program 1 times [2023-11-19 07:34:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825820521] [2023-11-19 07:34:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,061 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 07:34:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825820521] [2023-11-19 07:34:07,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825820521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:07,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:07,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220009441] [2023-11-19 07:34:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:07,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 465 [2023-11-19 07:34:07,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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 07:34:07,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:07,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 465 [2023-11-19 07:34:07,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:07,408 INFO L124 PetriNetUnfolderBase]: 743/1056 cut-off events. [2023-11-19 07:34:07,409 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-19 07:34:07,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 1056 events. 743/1056 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3530 event pairs, 241 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 1762. Up to 568 conditions per place. [2023-11-19 07:34:07,424 INFO L140 encePairwiseOnDemand]: 461/465 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-11-19 07:34:07,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 245 flow [2023-11-19 07:34:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-11-19 07:34:07,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2023-11-19 07:34:07,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-11-19 07:34:07,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-11-19 07:34:07,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:07,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-11-19 07:34:07,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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 07:34:07,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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 07:34:07,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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 07:34:07,479 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 693 transitions. [2023-11-19 07:34:07,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 245 flow [2023-11-19 07:34:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 223 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:34:07,490 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 87 flow [2023-11-19 07:34:07,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-11-19 07:34:07,496 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-11-19 07:34:07,497 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 87 flow [2023-11-19 07:34:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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 07:34:07,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:07,499 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] [2023-11-19 07:34:07,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:07,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -357804513, now seen corresponding path program 1 times [2023-11-19 07:34:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153769675] [2023-11-19 07:34:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153769675] [2023-11-19 07:34:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153769675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62665026] [2023-11-19 07:34:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:07,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:08,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 465 [2023-11-19 07:34:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 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 07:34:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:08,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 465 [2023-11-19 07:34:08,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:08,400 INFO L124 PetriNetUnfolderBase]: 1189/1743 cut-off events. [2023-11-19 07:34:08,400 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-19 07:34:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3821 conditions, 1743 events. 1189/1743 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6512 event pairs, 604 based on Foata normal form. 0/1329 useless extension candidates. Maximal degree in co-relation 1738. Up to 1057 conditions per place. [2023-11-19 07:34:08,414 INFO L140 encePairwiseOnDemand]: 455/465 looper letters, 68 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2023-11-19 07:34:08,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 82 transitions, 369 flow [2023-11-19 07:34:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-11-19 07:34:08,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44157706093189963 [2023-11-19 07:34:08,421 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-11-19 07:34:08,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-11-19 07:34:08,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:08,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-11-19 07:34:08,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 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 07:34:08,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 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 07:34:08,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 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 07:34:08,439 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 87 flow. Second operand 6 states and 1232 transitions. [2023-11-19 07:34:08,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 82 transitions, 369 flow [2023-11-19 07:34:08,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:08,445 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 180 flow [2023-11-19 07:34:08,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2023-11-19 07:34:08,452 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-19 07:34:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 180 flow [2023-11-19 07:34:08,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 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 07:34:08,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:08,454 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] [2023-11-19 07:34:08,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:08,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2143918962, now seen corresponding path program 1 times [2023-11-19 07:34:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122381493] [2023-11-19 07:34:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:08,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122381493] [2023-11-19 07:34:08,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122381493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:08,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839685324] [2023-11-19 07:34:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:08,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 465 [2023-11-19 07:34:08,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 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 07:34:08,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:08,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 465 [2023-11-19 07:34:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:09,139 INFO L124 PetriNetUnfolderBase]: 917/1341 cut-off events. [2023-11-19 07:34:09,139 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-19 07:34:09,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1341 events. 917/1341 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4648 event pairs, 569 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2450. Up to 1057 conditions per place. [2023-11-19 07:34:09,150 INFO L140 encePairwiseOnDemand]: 455/465 looper letters, 30 selfloop transitions, 6 changer transitions 39/75 dead transitions. [2023-11-19 07:34:09,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 414 flow [2023-11-19 07:34:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1220 transitions. [2023-11-19 07:34:09,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2023-11-19 07:34:09,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1220 transitions. [2023-11-19 07:34:09,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1220 transitions. [2023-11-19 07:34:09,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:09,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1220 transitions. [2023-11-19 07:34:09,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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 07:34:09,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 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 07:34:09,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 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 07:34:09,203 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 180 flow. Second operand 6 states and 1220 transitions. [2023-11-19 07:34:09,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 414 flow [2023-11-19 07:34:09,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:09,215 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 146 flow [2023-11-19 07:34:09,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-19 07:34:09,217 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-19 07:34:09,221 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 146 flow [2023-11-19 07:34:09,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 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 07:34:09,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:09,223 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] [2023-11-19 07:34:09,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:09,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:09,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash -864538355, now seen corresponding path program 1 times [2023-11-19 07:34:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895886027] [2023-11-19 07:34:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:09,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895886027] [2023-11-19 07:34:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895886027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313964226] [2023-11-19 07:34:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:09,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:09,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:09,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:09,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313964226] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:09,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-19 07:34:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417656133] [2023-11-19 07:34:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:09,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:09,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 465 [2023-11-19 07:34:09,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 189.4) internal successors, (947), 5 states have internal predecessors, (947), 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 07:34:09,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:09,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 465 [2023-11-19 07:34:09,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:10,195 INFO L124 PetriNetUnfolderBase]: 978/1386 cut-off events. [2023-11-19 07:34:10,195 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2023-11-19 07:34:10,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1386 events. 978/1386 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4835 event pairs, 476 based on Foata normal form. 0/1125 useless extension candidates. Maximal degree in co-relation 3443. Up to 1058 conditions per place. [2023-11-19 07:34:10,208 INFO L140 encePairwiseOnDemand]: 460/465 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-11-19 07:34:10,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 308 flow [2023-11-19 07:34:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 968 transitions. [2023-11-19 07:34:10,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41634408602150536 [2023-11-19 07:34:10,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 968 transitions. [2023-11-19 07:34:10,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 968 transitions. [2023-11-19 07:34:10,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:10,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 968 transitions. [2023-11-19 07:34:10,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.6) internal successors, (968), 5 states have internal predecessors, (968), 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 07:34:10,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:10,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:10,226 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 146 flow. Second operand 5 states and 968 transitions. [2023-11-19 07:34:10,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 308 flow [2023-11-19 07:34:10,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 260 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-11-19 07:34:10,235 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 126 flow [2023-11-19 07:34:10,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-19 07:34:10,239 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-19 07:34:10,240 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 126 flow [2023-11-19 07:34:10,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.4) internal successors, (947), 5 states have internal predecessors, (947), 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 07:34:10,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:10,242 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] [2023-11-19 07:34:10,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:34:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:10,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:10,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1899938680, now seen corresponding path program 1 times [2023-11-19 07:34:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238147054] [2023-11-19 07:34:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:10,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:10,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238147054] [2023-11-19 07:34:10,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238147054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:10,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201447643] [2023-11-19 07:34:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:10,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:10,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:10,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:10,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:10,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:10,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201447643] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:10,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-19 07:34:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567454821] [2023-11-19 07:34:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:10,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:11,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 465 [2023-11-19 07:34:11,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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 07:34:11,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:11,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 465 [2023-11-19 07:34:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:11,327 INFO L124 PetriNetUnfolderBase]: 1020/1427 cut-off events. [2023-11-19 07:34:11,327 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2023-11-19 07:34:11,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 1427 events. 1020/1427 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4729 event pairs, 337 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 3499. Up to 720 conditions per place. [2023-11-19 07:34:11,338 INFO L140 encePairwiseOnDemand]: 458/465 looper letters, 46 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-19 07:34:11,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 280 flow [2023-11-19 07:34:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 972 transitions. [2023-11-19 07:34:11,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180645161290323 [2023-11-19 07:34:11,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 972 transitions. [2023-11-19 07:34:11,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 972 transitions. [2023-11-19 07:34:11,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:11,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 972 transitions. [2023-11-19 07:34:11,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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 07:34:11,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:11,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:11,353 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 126 flow. Second operand 5 states and 972 transitions. [2023-11-19 07:34:11,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 280 flow [2023-11-19 07:34:11,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 266 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:11,356 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 151 flow [2023-11-19 07:34:11,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-19 07:34:11,358 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-19 07:34:11,358 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 151 flow [2023-11-19 07:34:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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 07:34:11,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:11,359 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] [2023-11-19 07:34:11,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:11,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -288432215, now seen corresponding path program 1 times [2023-11-19 07:34:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721430312] [2023-11-19 07:34:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721430312] [2023-11-19 07:34:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721430312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:11,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916341309] [2023-11-19 07:34:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:11,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:11,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:11,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:11,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:11,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916341309] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:12,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-19 07:34:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711790781] [2023-11-19 07:34:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:12,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:12,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 465 [2023-11-19 07:34:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 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 07:34:12,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:12,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 465 [2023-11-19 07:34:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:12,369 INFO L124 PetriNetUnfolderBase]: 966/1341 cut-off events. [2023-11-19 07:34:12,369 INFO L125 PetriNetUnfolderBase]: For 768/768 co-relation queries the response was YES. [2023-11-19 07:34:12,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 1341 events. 966/1341 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4488 event pairs, 319 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3771. Up to 756 conditions per place. [2023-11-19 07:34:12,381 INFO L140 encePairwiseOnDemand]: 459/465 looper letters, 51 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-19 07:34:12,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 339 flow [2023-11-19 07:34:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 967 transitions. [2023-11-19 07:34:12,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41591397849462364 [2023-11-19 07:34:12,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 967 transitions. [2023-11-19 07:34:12,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 967 transitions. [2023-11-19 07:34:12,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:12,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 967 transitions. [2023-11-19 07:34:12,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.4) internal successors, (967), 5 states have internal predecessors, (967), 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 07:34:12,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:12,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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 07:34:12,395 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 151 flow. Second operand 5 states and 967 transitions. [2023-11-19 07:34:12,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 339 flow [2023-11-19 07:34:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:12,400 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 170 flow [2023-11-19 07:34:12,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-19 07:34:12,403 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-11-19 07:34:12,403 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 170 flow [2023-11-19 07:34:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 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 07:34:12,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:12,404 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] [2023-11-19 07:34:12,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:34:12,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:34:12,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash 232319838, now seen corresponding path program 1 times [2023-11-19 07:34:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045037089] [2023-11-19 07:34:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045037089] [2023-11-19 07:34:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045037089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839661743] [2023-11-19 07:34:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:14,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59acb617-7f41-4980-8f5d-a0dc2529dc6b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:34:14,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:15,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:15,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:15,582 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:34:15,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-19 07:34:15,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:15,680 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:34:15,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-19 07:34:15,854 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2023-11-19 07:34:15,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2023-11-19 07:34:17,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:17,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 137 treesize of output 509 [2023-11-19 07:34:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:25,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:40,048 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int)) (v_ArrVal_260 (Array Int Int))) (= (mod (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_259) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0)) 4294967296) (mod (+ c_~asum~0 c_~bsum~0) 4294967296))) is different from false [2023-11-19 07:34:40,064 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int)) (v_ArrVal_260 (Array Int Int)) (~B~0.offset Int)) (= (mod (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_259) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_260))) (+ (select (select .cse0 c_~B~0.base) ~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~csum~0)) 4294967296) (mod (+ (select (select |c_#memory_int| c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) ~B~0.offset)) c_~asum~0 |c_thread1Thread1of1ForFork2_#t~mem2| c_~bsum~0) 4294967296))) is different from false [2023-11-19 07:34:40,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:40,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 922 [2023-11-19 07:34:40,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:40,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 422 treesize of output 414 [2023-11-19 07:34:40,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:34:40,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 406 treesize of output 382