./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/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_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/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_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --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 08:06:32,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:32,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:06:32,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:32,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:33,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:33,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:33,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:33,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:33,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:33,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:33,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:33,022 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:33,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:33,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:33,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:33,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:33,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:33,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:33,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:33,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:33,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:33,028 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:06:33,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:33,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:33,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:33,031 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:33,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:33,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:33,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:33,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:33,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:33,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:33,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:33,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:33,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:33,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:33,037 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:33,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:33,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:33,039 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:33,039 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_8fd0b459-63fb-4a73-a69b-d0431f6c8026/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2023-11-19 08:06:33,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:33,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:33,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:33,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:33,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:33,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-19 08:06:36,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:36,860 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:36,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-19 08:06:36,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/data/d98841bec/873c4ac6f0b34d9282f2426aa446a5bb/FLAG4cc1ba95d [2023-11-19 08:06:36,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/data/d98841bec/873c4ac6f0b34d9282f2426aa446a5bb [2023-11-19 08:06:36,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:36,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:36,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:36,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:36,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:36,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:36" (1/1) ... [2023-11-19 08:06:36,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f2a306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:36, skipping insertion in model container [2023-11-19 08:06:36,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:36" (1/1) ... [2023-11-19 08:06:36,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:37,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:37,146 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:37,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:37,214 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:37,215 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:37,223 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:37,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37 WrapperNode [2023-11-19 08:06:37,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:37,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:37,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:37,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:37,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,272 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 164 [2023-11-19 08:06:37,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:37,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:37,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:37,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:37,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:37,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:37,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:37,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:37,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:37,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:37,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:37,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:06:37,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:06:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:06:37,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:06:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:06:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:06:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:06:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:06:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:06:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:37,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:37,431 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 08:06:37,548 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:37,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:37,998 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:38,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:38,108 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 08:06:38,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:38 BoogieIcfgContainer [2023-11-19 08:06:38,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:38,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:38,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:38,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:38,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:36" (1/3) ... [2023-11-19 08:06:38,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df6f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:38, skipping insertion in model container [2023-11-19 08:06:38,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:37" (2/3) ... [2023-11-19 08:06:38,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df6f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:38, skipping insertion in model container [2023-11-19 08:06:38,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:38" (3/3) ... [2023-11-19 08:06:38,123 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-19 08:06:38,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:38,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:38,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 08:06:38,140 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:38,237 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:06:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 265 transitions, 551 flow [2023-11-19 08:06:38,400 INFO L124 PetriNetUnfolderBase]: 20/262 cut-off events. [2023-11-19 08:06:38,400 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:06:38,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 20/262 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 273 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-11-19 08:06:38,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 265 transitions, 551 flow [2023-11-19 08:06:38,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 238 transitions, 491 flow [2023-11-19 08:06:38,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:38,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 238 transitions, 491 flow [2023-11-19 08:06:38,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 238 transitions, 491 flow [2023-11-19 08:06:38,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 238 transitions, 491 flow [2023-11-19 08:06:38,497 INFO L124 PetriNetUnfolderBase]: 19/238 cut-off events. [2023-11-19 08:06:38,497 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:38,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 238 events. 19/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 269 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-11-19 08:06:38,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 3642 [2023-11-19 08:06:47,467 INFO L134 LiptonReduction]: Checked pairs total: 5408 [2023-11-19 08:06:47,468 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-11-19 08:06:47,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:47,492 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;@3d146e2a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:47,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 08:06:47,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:47,496 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:06:47,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:47,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:47,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:06:47,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:47,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash 31802, now seen corresponding path program 1 times [2023-11-19 08:06:47,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:47,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59178720] [2023-11-19 08:06:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:47,787 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 08:06:47,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59178720] [2023-11-19 08:06:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59178720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:47,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434953085] [2023-11-19 08:06:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:47,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 526 [2023-11-19 08:06:47,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 08:06:47,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:47,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 526 [2023-11-19 08:06:47,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:48,352 INFO L124 PetriNetUnfolderBase]: 1243/1760 cut-off events. [2023-11-19 08:06:48,353 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-19 08:06:48,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1760 events. 1243/1760 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6456 event pairs, 925 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 3120. Up to 1756 conditions per place. [2023-11-19 08:06:48,375 INFO L140 encePairwiseOnDemand]: 511/526 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-11-19 08:06:48,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 203 flow [2023-11-19 08:06:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-19 08:06:48,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645120405576679 [2023-11-19 08:06:48,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-19 08:06:48,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-19 08:06:48,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:48,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-19 08:06:48,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 08:06:48,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:48,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:48,435 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 733 transitions. [2023-11-19 08:06:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 203 flow [2023-11-19 08:06:48,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:48,446 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 152 flow [2023-11-19 08:06:48,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-11-19 08:06:48,454 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-19 08:06:48,454 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 152 flow [2023-11-19 08:06:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 08:06:48,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:48,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:48,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:48,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:48,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 988452, now seen corresponding path program 1 times [2023-11-19 08:06:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377305476] [2023-11-19 08:06:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:48,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:48,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377305476] [2023-11-19 08:06:48,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377305476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638656810] [2023-11-19 08:06:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:48,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:48,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:48,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:06:48,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:48,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638656810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:48,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:06:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978668937] [2023-11-19 08:06:48,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:06:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:06:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:48,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 526 [2023-11-19 08:06:48,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 227.14285714285714) internal successors, (1590), 7 states have internal predecessors, (1590), 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 08:06:48,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:48,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 526 [2023-11-19 08:06:48,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:49,337 INFO L124 PetriNetUnfolderBase]: 1261/1787 cut-off events. [2023-11-19 08:06:49,337 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 08:06:49,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1787 events. 1261/1787 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6510 event pairs, 925 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 3549. Up to 1756 conditions per place. [2023-11-19 08:06:49,352 INFO L140 encePairwiseOnDemand]: 513/526 looper letters, 37 selfloop transitions, 37 changer transitions 0/74 dead transitions. [2023-11-19 08:06:49,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 420 flow [2023-11-19 08:06:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:06:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:06:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1665 transitions. [2023-11-19 08:06:49,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219989136338945 [2023-11-19 08:06:49,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1665 transitions. [2023-11-19 08:06:49,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1665 transitions. [2023-11-19 08:06:49,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:49,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1665 transitions. [2023-11-19 08:06:49,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.85714285714286) internal successors, (1665), 7 states have internal predecessors, (1665), 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 08:06:49,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 526.0) internal successors, (4208), 8 states have internal predecessors, (4208), 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 08:06:49,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 526.0) internal successors, (4208), 8 states have internal predecessors, (4208), 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 08:06:49,386 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 152 flow. Second operand 7 states and 1665 transitions. [2023-11-19 08:06:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 420 flow [2023-11-19 08:06:49,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:49,393 INFO L231 Difference]: Finished difference. Result has 50 places, 74 transitions, 382 flow [2023-11-19 08:06:49,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=50, PETRI_TRANSITIONS=74} [2023-11-19 08:06:49,394 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-19 08:06:49,394 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 74 transitions, 382 flow [2023-11-19 08:06:49,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.14285714285714) internal successors, (1590), 7 states have internal predecessors, (1590), 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 08:06:49,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:49,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 08:06:49,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:06:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:49,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:49,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 30642938, now seen corresponding path program 1 times [2023-11-19 08:06:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670307099] [2023-11-19 08:06:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:06:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670307099] [2023-11-19 08:06:49,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670307099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:49,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:49,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111542715] [2023-11-19 08:06:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:49,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:49,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 526 [2023-11-19 08:06:49,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 74 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 08:06:49,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:49,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 526 [2023-11-19 08:06:49,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:50,050 INFO L124 PetriNetUnfolderBase]: 1252/1775 cut-off events. [2023-11-19 08:06:50,051 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-19 08:06:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1775 events. 1252/1775 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6485 event pairs, 925 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 3620. Up to 1747 conditions per place. [2023-11-19 08:06:50,065 INFO L140 encePairwiseOnDemand]: 521/526 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-19 08:06:50,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 425 flow [2023-11-19 08:06:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2023-11-19 08:06:50,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556400506970849 [2023-11-19 08:06:50,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2023-11-19 08:06:50,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2023-11-19 08:06:50,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:50,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2023-11-19 08:06:50,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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 08:06:50,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:50,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:50,079 INFO L175 Difference]: Start difference. First operand has 50 places, 74 transitions, 382 flow. Second operand 3 states and 719 transitions. [2023-11-19 08:06:50,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 425 flow [2023-11-19 08:06:50,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 388 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:50,085 INFO L231 Difference]: Finished difference. Result has 47 places, 62 transitions, 276 flow [2023-11-19 08:06:50,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=47, PETRI_TRANSITIONS=62} [2023-11-19 08:06:50,086 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-11-19 08:06:50,086 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 62 transitions, 276 flow [2023-11-19 08:06:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 08:06:50,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:50,087 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:06:50,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:50,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:50,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash -616826386, now seen corresponding path program 2 times [2023-11-19 08:06:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820911437] [2023-11-19 08:06:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:50,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:50,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820911437] [2023-11-19 08:06:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820911437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542670705] [2023-11-19 08:06:50,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:06:50,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:50,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:50,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:50,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:06:50,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:06:50,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:06:50,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:06:50,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542670705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:06:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158494412] [2023-11-19 08:06:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:50,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 526 [2023-11-19 08:06:50,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 62 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 08:06:50,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:50,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 526 [2023-11-19 08:06:50,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:50,669 INFO L124 PetriNetUnfolderBase]: 1252/1774 cut-off events. [2023-11-19 08:06:50,669 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-19 08:06:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 1774 events. 1252/1774 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6500 event pairs, 925 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 3614. Up to 1769 conditions per place. [2023-11-19 08:06:50,683 INFO L140 encePairwiseOnDemand]: 523/526 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-11-19 08:06:50,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 388 flow [2023-11-19 08:06:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-11-19 08:06:50,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46514575411913817 [2023-11-19 08:06:50,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-11-19 08:06:50,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-11-19 08:06:50,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:50,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-11-19 08:06:50,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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 08:06:50,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:50,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:50,696 INFO L175 Difference]: Start difference. First operand has 47 places, 62 transitions, 276 flow. Second operand 3 states and 734 transitions. [2023-11-19 08:06:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 388 flow [2023-11-19 08:06:50,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:50,701 INFO L231 Difference]: Finished difference. Result has 46 places, 61 transitions, 266 flow [2023-11-19 08:06:50,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=46, PETRI_TRANSITIONS=61} [2023-11-19 08:06:50,702 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-19 08:06:50,702 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 61 transitions, 266 flow [2023-11-19 08:06:50,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 08:06:50,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:50,703 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 08:06:50,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:50,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:50,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:50,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1443600628, now seen corresponding path program 1 times [2023-11-19 08:06:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:50,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312708028] [2023-11-19 08:06:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:51,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312708028] [2023-11-19 08:06:51,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312708028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338102669] [2023-11-19 08:06:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:51,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:51,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:51,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:51,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:06:51,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:06:51,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338102669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:51,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-19 08:06:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910060015] [2023-11-19 08:06:51,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:51,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 526 [2023-11-19 08:06:51,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 61 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 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 08:06:51,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:51,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 526 [2023-11-19 08:06:51,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:51,669 INFO L124 PetriNetUnfolderBase]: 1252/1776 cut-off events. [2023-11-19 08:06:51,669 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-19 08:06:51,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1776 events. 1252/1776 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6545 event pairs, 925 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 3621. Up to 1765 conditions per place. [2023-11-19 08:06:51,684 INFO L140 encePairwiseOnDemand]: 519/526 looper letters, 47 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-19 08:06:51,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 401 flow [2023-11-19 08:06:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:06:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 931 transitions. [2023-11-19 08:06:51,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44249049429657794 [2023-11-19 08:06:51,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 931 transitions. [2023-11-19 08:06:51,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 931 transitions. [2023-11-19 08:06:51,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:51,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 931 transitions. [2023-11-19 08:06:51,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 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 08:06:51,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:06:51,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:06:51,700 INFO L175 Difference]: Start difference. First operand has 46 places, 61 transitions, 266 flow. Second operand 4 states and 931 transitions. [2023-11-19 08:06:51,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 401 flow [2023-11-19 08:06:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:51,705 INFO L231 Difference]: Finished difference. Result has 48 places, 63 transitions, 312 flow [2023-11-19 08:06:51,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=48, PETRI_TRANSITIONS=63} [2023-11-19 08:06:51,706 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-11-19 08:06:51,706 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 63 transitions, 312 flow [2023-11-19 08:06:51,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 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 08:06:51,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:51,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:51,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:51,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:51,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1596436103, now seen corresponding path program 1 times [2023-11-19 08:06:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923192428] [2023-11-19 08:06:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:51,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:51,979 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 08:06:51,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:51,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923192428] [2023-11-19 08:06:51,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923192428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:51,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:51,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:51,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108651463] [2023-11-19 08:06:51,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:51,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:51,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:51,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:51,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:51,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 526 [2023-11-19 08:06:51,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 63 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 08:06:51,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:51,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 526 [2023-11-19 08:06:51,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:52,337 INFO L124 PetriNetUnfolderBase]: 1688/2356 cut-off events. [2023-11-19 08:06:52,337 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 08:06:52,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 2356 events. 1688/2356 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9266 event pairs, 925 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 4818. Up to 1849 conditions per place. [2023-11-19 08:06:52,356 INFO L140 encePairwiseOnDemand]: 521/526 looper letters, 80 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-19 08:06:52,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 521 flow [2023-11-19 08:06:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-11-19 08:06:52,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986058301647656 [2023-11-19 08:06:52,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-11-19 08:06:52,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-11-19 08:06:52,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:52,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-11-19 08:06:52,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 08:06:52,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:52,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:52,368 INFO L175 Difference]: Start difference. First operand has 48 places, 63 transitions, 312 flow. Second operand 3 states and 773 transitions. [2023-11-19 08:06:52,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 521 flow [2023-11-19 08:06:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 503 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:52,372 INFO L231 Difference]: Finished difference. Result has 50 places, 65 transitions, 315 flow [2023-11-19 08:06:52,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=50, PETRI_TRANSITIONS=65} [2023-11-19 08:06:52,374 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-19 08:06:52,374 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 65 transitions, 315 flow [2023-11-19 08:06:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 08:06:52,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:52,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-19 08:06:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:52,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:52,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 433508374, now seen corresponding path program 1 times [2023-11-19 08:06:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208374740] [2023-11-19 08:06:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:06:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208374740] [2023-11-19 08:06:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208374740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867145237] [2023-11-19 08:06:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:52,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:52,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:52,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:06:52,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:06:52,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:06:52,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867145237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:52,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:52,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-11-19 08:06:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059590755] [2023-11-19 08:06:52,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:52,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:06:52,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:06:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:06:53,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 526 [2023-11-19 08:06:53,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 65 transitions, 315 flow. Second operand has 14 states, 14 states have (on average 216.28571428571428) internal successors, (3028), 14 states have internal predecessors, (3028), 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 08:06:53,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:53,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 526 [2023-11-19 08:06:53,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:54,227 INFO L124 PetriNetUnfolderBase]: 3362/4683 cut-off events. [2023-11-19 08:06:54,227 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2023-11-19 08:06:54,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 4683 events. 3362/4683 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18879 event pairs, 2442 based on Foata normal form. 2/2915 useless extension candidates. Maximal degree in co-relation 10866. Up to 2337 conditions per place. [2023-11-19 08:06:54,274 INFO L140 encePairwiseOnDemand]: 517/526 looper letters, 73 selfloop transitions, 28 changer transitions 0/101 dead transitions. [2023-11-19 08:06:54,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 101 transitions, 641 flow [2023-11-19 08:06:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:06:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2022 transitions. [2023-11-19 08:06:54,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42712294043092525 [2023-11-19 08:06:54,284 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2022 transitions. [2023-11-19 08:06:54,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2022 transitions. [2023-11-19 08:06:54,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:54,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2022 transitions. [2023-11-19 08:06:54,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.66666666666666) internal successors, (2022), 9 states have internal predecessors, (2022), 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 08:06:54,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 526.0) internal successors, (5260), 10 states have internal predecessors, (5260), 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 08:06:54,304 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 526.0) internal successors, (5260), 10 states have internal predecessors, (5260), 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 08:06:54,304 INFO L175 Difference]: Start difference. First operand has 50 places, 65 transitions, 315 flow. Second operand 9 states and 2022 transitions. [2023-11-19 08:06:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 101 transitions, 641 flow [2023-11-19 08:06:54,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:54,310 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 409 flow [2023-11-19 08:06:54,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=409, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-11-19 08:06:54,311 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-19 08:06:54,312 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 409 flow [2023-11-19 08:06:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 216.28571428571428) internal successors, (3028), 14 states have internal predecessors, (3028), 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 08:06:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-11-19 08:06:54,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:06:54,540 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1505654708, now seen corresponding path program 2 times [2023-11-19 08:06:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808489610] [2023-11-19 08:06:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:06:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808489610] [2023-11-19 08:06:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808489610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407424480] [2023-11-19 08:06:54,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:06:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:54,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:54,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:54,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:06:54,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:06:54,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:06:54,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:06:54,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407424480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:54,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:54,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-19 08:06:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304218337] [2023-11-19 08:06:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:54,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:54,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 526 [2023-11-19 08:06:55,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 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 08:06:55,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:55,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 526 [2023-11-19 08:06:55,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:55,502 INFO L124 PetriNetUnfolderBase]: 2706/3777 cut-off events. [2023-11-19 08:06:55,503 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-19 08:06:55,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 3777 events. 2706/3777 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14412 event pairs, 1914 based on Foata normal form. 2/2457 useless extension candidates. Maximal degree in co-relation 8564. Up to 3746 conditions per place. [2023-11-19 08:06:55,528 INFO L140 encePairwiseOnDemand]: 521/526 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-11-19 08:06:55,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 519 flow [2023-11-19 08:06:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:06:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 957 transitions. [2023-11-19 08:06:55,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45484790874524716 [2023-11-19 08:06:55,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 957 transitions. [2023-11-19 08:06:55,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 957 transitions. [2023-11-19 08:06:55,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:55,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 957 transitions. [2023-11-19 08:06:55,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 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 08:06:55,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:06:55,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:06:55,543 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 409 flow. Second operand 4 states and 957 transitions. [2023-11-19 08:06:55,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 519 flow [2023-11-19 08:06:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 425 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-19 08:06:55,550 INFO L231 Difference]: Finished difference. Result has 49 places, 68 transitions, 307 flow [2023-11-19 08:06:55,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=49, PETRI_TRANSITIONS=68} [2023-11-19 08:06:55,554 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-11-19 08:06:55,554 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 68 transitions, 307 flow [2023-11-19 08:06:55,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 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 08:06:55,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:55,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:55,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:55,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:55,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:55,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2052284497, now seen corresponding path program 1 times [2023-11-19 08:06:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965097118] [2023-11-19 08:06:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:55,822 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 08:06:55,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:55,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965097118] [2023-11-19 08:06:55,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965097118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:55,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:55,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397113625] [2023-11-19 08:06:55,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:55,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:55,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:55,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 526 [2023-11-19 08:06:55,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 68 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 08:06:55,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:55,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 526 [2023-11-19 08:06:55,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:56,384 INFO L124 PetriNetUnfolderBase]: 3610/4929 cut-off events. [2023-11-19 08:06:56,384 INFO L125 PetriNetUnfolderBase]: For 729/729 co-relation queries the response was YES. [2023-11-19 08:06:56,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 4929 events. 3610/4929 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19618 event pairs, 1914 based on Foata normal form. 0/3161 useless extension candidates. Maximal degree in co-relation 5513. Up to 4026 conditions per place. [2023-11-19 08:06:56,457 INFO L140 encePairwiseOnDemand]: 522/526 looper letters, 87 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-11-19 08:06:56,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 90 transitions, 548 flow [2023-11-19 08:06:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2023-11-19 08:06:56,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873257287705957 [2023-11-19 08:06:56,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2023-11-19 08:06:56,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2023-11-19 08:06:56,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:56,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2023-11-19 08:06:56,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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 08:06:56,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:56,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:56,470 INFO L175 Difference]: Start difference. First operand has 49 places, 68 transitions, 307 flow. Second operand 3 states and 769 transitions. [2023-11-19 08:06:56,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 90 transitions, 548 flow [2023-11-19 08:06:56,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:56,474 INFO L231 Difference]: Finished difference. Result has 50 places, 70 transitions, 316 flow [2023-11-19 08:06:56,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=50, PETRI_TRANSITIONS=70} [2023-11-19 08:06:56,475 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-19 08:06:56,476 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 70 transitions, 316 flow [2023-11-19 08:06:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 08:06:56,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:56,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:56,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:56,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -803684882, now seen corresponding path program 1 times [2023-11-19 08:06:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939580050] [2023-11-19 08:06:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:56,523 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 08:06:56,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:56,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939580050] [2023-11-19 08:06:56,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939580050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:56,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:56,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:56,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721900768] [2023-11-19 08:06:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:56,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 526 [2023-11-19 08:06:56,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 70 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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 08:06:56,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:56,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 526 [2023-11-19 08:06:56,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:57,001 INFO L124 PetriNetUnfolderBase]: 2954/4025 cut-off events. [2023-11-19 08:06:57,001 INFO L125 PetriNetUnfolderBase]: For 1324/1324 co-relation queries the response was YES. [2023-11-19 08:06:57,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 4025 events. 2954/4025 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15863 event pairs, 858 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 5363. Up to 2056 conditions per place. [2023-11-19 08:06:57,027 INFO L140 encePairwiseOnDemand]: 523/526 looper letters, 86 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-19 08:06:57,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 89 transitions, 547 flow [2023-11-19 08:06:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-11-19 08:06:57,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48542458808618505 [2023-11-19 08:06:57,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-11-19 08:06:57,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-11-19 08:06:57,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:57,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-11-19 08:06:57,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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 08:06:57,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:57,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:57,040 INFO L175 Difference]: Start difference. First operand has 50 places, 70 transitions, 316 flow. Second operand 3 states and 766 transitions. [2023-11-19 08:06:57,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 89 transitions, 547 flow [2023-11-19 08:06:57,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 542 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:57,046 INFO L231 Difference]: Finished difference. Result has 50 places, 69 transitions, 313 flow [2023-11-19 08:06:57,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=50, PETRI_TRANSITIONS=69} [2023-11-19 08:06:57,047 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-19 08:06:57,047 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 69 transitions, 313 flow [2023-11-19 08:06:57,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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 08:06:57,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:57,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:57,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:57,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:57,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash -871730076, now seen corresponding path program 1 times [2023-11-19 08:06:57,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:57,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436890000] [2023-11-19 08:06:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:06:57,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:57,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436890000] [2023-11-19 08:06:57,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436890000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:57,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:57,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399134112] [2023-11-19 08:06:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:57,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:57,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 526 [2023-11-19 08:06:57,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 69 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 08:06:57,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:57,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 526 [2023-11-19 08:06:57,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:58,037 INFO L124 PetriNetUnfolderBase]: 3506/4812 cut-off events. [2023-11-19 08:06:58,037 INFO L125 PetriNetUnfolderBase]: For 3547/3547 co-relation queries the response was YES. [2023-11-19 08:06:58,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 4812 events. 3506/4812 cut-off events. For 3547/3547 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19194 event pairs, 2175 based on Foata normal form. 58/3904 useless extension candidates. Maximal degree in co-relation 5363. Up to 4009 conditions per place. [2023-11-19 08:06:58,068 INFO L140 encePairwiseOnDemand]: 516/526 looper letters, 85 selfloop transitions, 23 changer transitions 2/110 dead transitions. [2023-11-19 08:06:58,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 110 transitions, 656 flow [2023-11-19 08:06:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:06:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1381 transitions. [2023-11-19 08:06:58,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43757921419518375 [2023-11-19 08:06:58,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1381 transitions. [2023-11-19 08:06:58,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1381 transitions. [2023-11-19 08:06:58,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:58,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1381 transitions. [2023-11-19 08:06:58,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.16666666666666) internal successors, (1381), 6 states have internal predecessors, (1381), 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 08:06:58,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:06:58,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:06:58,090 INFO L175 Difference]: Start difference. First operand has 50 places, 69 transitions, 313 flow. Second operand 6 states and 1381 transitions. [2023-11-19 08:06:58,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 110 transitions, 656 flow [2023-11-19 08:06:58,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:58,098 INFO L231 Difference]: Finished difference. Result has 55 places, 71 transitions, 374 flow [2023-11-19 08:06:58,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=55, PETRI_TRANSITIONS=71} [2023-11-19 08:06:58,099 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-19 08:06:58,100 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 71 transitions, 374 flow [2023-11-19 08:06:58,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 08:06:58,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:58,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:58,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:06:58,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:58,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 839670101, now seen corresponding path program 1 times [2023-11-19 08:06:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154278953] [2023-11-19 08:06:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:58,161 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 08:06:58,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154278953] [2023-11-19 08:06:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154278953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504385336] [2023-11-19 08:06:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 526 [2023-11-19 08:06:58,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 71 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 08:06:58,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:58,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 526 [2023-11-19 08:06:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:58,966 INFO L124 PetriNetUnfolderBase]: 5146/6998 cut-off events. [2023-11-19 08:06:58,966 INFO L125 PetriNetUnfolderBase]: For 3838/3838 co-relation queries the response was YES. [2023-11-19 08:06:58,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18309 conditions, 6998 events. 5146/6998 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 29410 event pairs, 2291 based on Foata normal form. 0/5140 useless extension candidates. Maximal degree in co-relation 7519. Up to 4813 conditions per place. [2023-11-19 08:06:59,008 INFO L140 encePairwiseOnDemand]: 522/526 looper letters, 93 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-19 08:06:59,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 654 flow [2023-11-19 08:06:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-11-19 08:06:59,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879594423320659 [2023-11-19 08:06:59,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-11-19 08:06:59,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-11-19 08:06:59,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:59,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-11-19 08:06:59,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 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 08:06:59,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:59,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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 08:06:59,020 INFO L175 Difference]: Start difference. First operand has 55 places, 71 transitions, 374 flow. Second operand 3 states and 770 transitions. [2023-11-19 08:06:59,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 654 flow [2023-11-19 08:06:59,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 95 transitions, 615 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:06:59,027 INFO L231 Difference]: Finished difference. Result has 55 places, 72 transitions, 349 flow [2023-11-19 08:06:59,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=55, PETRI_TRANSITIONS=72} [2023-11-19 08:06:59,028 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-19 08:06:59,028 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 72 transitions, 349 flow [2023-11-19 08:06:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 08:06:59,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:59,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:06:59,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:06:59,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 435084383, now seen corresponding path program 1 times [2023-11-19 08:06:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698732016] [2023-11-19 08:06:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:06:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698732016] [2023-11-19 08:06:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698732016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:59,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079909434] [2023-11-19 08:06:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:59,103 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:59,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:06:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:59,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:06:59,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:06:59,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:06:59,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079909434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:59,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:59,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-19 08:06:59,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137345756] [2023-11-19 08:06:59,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:59,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:06:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:06:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:06:59,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 526 [2023-11-19 08:06:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 72 transitions, 349 flow. Second operand has 13 states, 13 states have (on average 212.53846153846155) internal successors, (2763), 13 states have internal predecessors, (2763), 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 08:06:59,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:59,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 526 [2023-11-19 08:06:59,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:01,057 INFO L124 PetriNetUnfolderBase]: 4480/6176 cut-off events. [2023-11-19 08:07:01,057 INFO L125 PetriNetUnfolderBase]: For 2937/2937 co-relation queries the response was YES. [2023-11-19 08:07:01,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 6176 events. 4480/6176 cut-off events. For 2937/2937 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 26606 event pairs, 1402 based on Foata normal form. 82/4772 useless extension candidates. Maximal degree in co-relation 8429. Up to 2375 conditions per place. [2023-11-19 08:07:01,096 INFO L140 encePairwiseOnDemand]: 514/526 looper letters, 134 selfloop transitions, 35 changer transitions 3/172 dead transitions. [2023-11-19 08:07:01,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 172 transitions, 1025 flow [2023-11-19 08:07:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:07:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 08:07:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2450 transitions. [2023-11-19 08:07:01,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42343587970964397 [2023-11-19 08:07:01,107 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2450 transitions. [2023-11-19 08:07:01,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2450 transitions. [2023-11-19 08:07:01,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:01,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2450 transitions. [2023-11-19 08:07:01,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.72727272727272) internal successors, (2450), 11 states have internal predecessors, (2450), 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 08:07:01,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 526.0) internal successors, (6312), 12 states have internal predecessors, (6312), 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 08:07:01,129 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 526.0) internal successors, (6312), 12 states have internal predecessors, (6312), 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 08:07:01,129 INFO L175 Difference]: Start difference. First operand has 55 places, 72 transitions, 349 flow. Second operand 11 states and 2450 transitions. [2023-11-19 08:07:01,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 172 transitions, 1025 flow [2023-11-19 08:07:01,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 172 transitions, 1013 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:01,139 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 437 flow [2023-11-19 08:07:01,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=437, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-11-19 08:07:01,141 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-19 08:07:01,141 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 437 flow [2023-11-19 08:07:01,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 212.53846153846155) internal successors, (2763), 13 states have internal predecessors, (2763), 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 08:07:01,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:01,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:01,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:07:01,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:01,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -530802807, now seen corresponding path program 1 times [2023-11-19 08:07:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:01,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571693575] [2023-11-19 08:07:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:01,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571693575] [2023-11-19 08:07:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571693575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:01,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958923259] [2023-11-19 08:07:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:01,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:01,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:01,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:07:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:01,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:01,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:07:01,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:01,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958923259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:01,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:01,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-19 08:07:01,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970396083] [2023-11-19 08:07:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:01,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:01,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 526 [2023-11-19 08:07:01,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 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 08:07:01,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 526 [2023-11-19 08:07:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:02,400 INFO L124 PetriNetUnfolderBase]: 3910/5402 cut-off events. [2023-11-19 08:07:02,401 INFO L125 PetriNetUnfolderBase]: For 5573/5573 co-relation queries the response was YES. [2023-11-19 08:07:02,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15797 conditions, 5402 events. 3910/5402 cut-off events. For 5573/5573 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21506 event pairs, 2517 based on Foata normal form. 0/4168 useless extension candidates. Maximal degree in co-relation 8839. Up to 5003 conditions per place. [2023-11-19 08:07:02,438 INFO L140 encePairwiseOnDemand]: 516/526 looper letters, 51 selfloop transitions, 15 changer transitions 38/104 dead transitions. [2023-11-19 08:07:02,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 745 flow [2023-11-19 08:07:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2023-11-19 08:07:02,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43631178707224333 [2023-11-19 08:07:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2023-11-19 08:07:02,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2023-11-19 08:07:02,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:02,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2023-11-19 08:07:02,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 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 08:07:02,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:07:02,460 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:07:02,460 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 437 flow. Second operand 6 states and 1377 transitions. [2023-11-19 08:07:02,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 745 flow [2023-11-19 08:07:02,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 686 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-19 08:07:02,472 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 345 flow [2023-11-19 08:07:02,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-11-19 08:07:02,473 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-11-19 08:07:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 345 flow [2023-11-19 08:07:02,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 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 08:07:02,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:02,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:02,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:07:02,691 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:02,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash 987657157, now seen corresponding path program 1 times [2023-11-19 08:07:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429461168] [2023-11-19 08:07:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:02,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:07:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429461168] [2023-11-19 08:07:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429461168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899250668] [2023-11-19 08:07:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:02,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:02,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:02,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:07:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:02,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:07:02,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:07:03,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899250668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:03,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:07:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336564913] [2023-11-19 08:07:03,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:07:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:07:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:03,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 526 [2023-11-19 08:07:03,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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 08:07:03,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:03,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 526 [2023-11-19 08:07:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:03,878 INFO L124 PetriNetUnfolderBase]: 5305/7154 cut-off events. [2023-11-19 08:07:03,878 INFO L125 PetriNetUnfolderBase]: For 4066/4066 co-relation queries the response was YES. [2023-11-19 08:07:03,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21405 conditions, 7154 events. 5305/7154 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 29323 event pairs, 1600 based on Foata normal form. 0/5906 useless extension candidates. Maximal degree in co-relation 16369. Up to 3679 conditions per place. [2023-11-19 08:07:03,920 INFO L140 encePairwiseOnDemand]: 522/526 looper letters, 135 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2023-11-19 08:07:03,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 148 transitions, 947 flow [2023-11-19 08:07:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1535 transitions. [2023-11-19 08:07:03,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48637515842839035 [2023-11-19 08:07:03,927 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1535 transitions. [2023-11-19 08:07:03,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1535 transitions. [2023-11-19 08:07:03,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:03,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1535 transitions. [2023-11-19 08:07:03,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.83333333333334) internal successors, (1535), 6 states have internal predecessors, (1535), 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 08:07:03,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:07:03,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 526.0) internal successors, (3682), 7 states have internal predecessors, (3682), 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 08:07:03,941 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 345 flow. Second operand 6 states and 1535 transitions. [2023-11-19 08:07:03,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 148 transitions, 947 flow [2023-11-19 08:07:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 148 transitions, 841 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-19 08:07:03,969 INFO L231 Difference]: Finished difference. Result has 59 places, 72 transitions, 348 flow [2023-11-19 08:07:03,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=59, PETRI_TRANSITIONS=72} [2023-11-19 08:07:03,970 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-19 08:07:03,970 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 72 transitions, 348 flow [2023-11-19 08:07:03,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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 08:07:03,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:03,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:04,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:07:04,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:04,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1434880516, now seen corresponding path program 1 times [2023-11-19 08:07:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:04,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877140557] [2023-11-19 08:07:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:07:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877140557] [2023-11-19 08:07:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877140557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511304005] [2023-11-19 08:07:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:04,367 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:04,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:07:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:04,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:07:04,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:04,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511304005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:04,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:04,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-19 08:07:04,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774533362] [2023-11-19 08:07:04,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:07:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:07:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:05,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 526 [2023-11-19 08:07:05,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 348 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 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 08:07:05,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:05,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 526 [2023-11-19 08:07:05,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:06,404 INFO L124 PetriNetUnfolderBase]: 6195/8290 cut-off events. [2023-11-19 08:07:06,404 INFO L125 PetriNetUnfolderBase]: For 9720/9720 co-relation queries the response was YES. [2023-11-19 08:07:06,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25121 conditions, 8290 events. 6195/8290 cut-off events. For 9720/9720 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 33406 event pairs, 1306 based on Foata normal form. 0/6502 useless extension candidates. Maximal degree in co-relation 21311. Up to 2615 conditions per place. [2023-11-19 08:07:06,432 INFO L140 encePairwiseOnDemand]: 512/526 looper letters, 137 selfloop transitions, 20 changer transitions 94/251 dead transitions. [2023-11-19 08:07:06,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 251 transitions, 1745 flow [2023-11-19 08:07:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:07:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:07:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3123 transitions. [2023-11-19 08:07:06,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42409016838674635 [2023-11-19 08:07:06,443 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3123 transitions. [2023-11-19 08:07:06,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3123 transitions. [2023-11-19 08:07:06,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:06,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3123 transitions. [2023-11-19 08:07:06,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.07142857142858) internal successors, (3123), 14 states have internal predecessors, (3123), 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 08:07:06,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 526.0) internal successors, (7890), 15 states have internal predecessors, (7890), 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 08:07:06,470 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 526.0) internal successors, (7890), 15 states have internal predecessors, (7890), 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 08:07:06,470 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 348 flow. Second operand 14 states and 3123 transitions. [2023-11-19 08:07:06,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 251 transitions, 1745 flow [2023-11-19 08:07:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 251 transitions, 1643 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:06,488 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 348 flow [2023-11-19 08:07:06,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=348, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-11-19 08:07:06,489 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-19 08:07:06,489 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 348 flow [2023-11-19 08:07:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 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 08:07:06,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:06,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:06,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:07:06,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:06,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1134434608, now seen corresponding path program 1 times [2023-11-19 08:07:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026644511] [2023-11-19 08:07:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:07:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026644511] [2023-11-19 08:07:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026644511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440887094] [2023-11-19 08:07:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:06,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:06,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:06,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:07:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:06,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:06,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:07:06,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440887094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 08:07:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183856476] [2023-11-19 08:07:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:06,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:07,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 526 [2023-11-19 08:07:07,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 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 08:07:07,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:07,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 526 [2023-11-19 08:07:07,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:07,733 INFO L124 PetriNetUnfolderBase]: 4808/6416 cut-off events. [2023-11-19 08:07:07,733 INFO L125 PetriNetUnfolderBase]: For 7477/7477 co-relation queries the response was YES. [2023-11-19 08:07:07,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21109 conditions, 6416 events. 4808/6416 cut-off events. For 7477/7477 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 25027 event pairs, 359 based on Foata normal form. 264/5769 useless extension candidates. Maximal degree in co-relation 20993. Up to 3924 conditions per place. [2023-11-19 08:07:07,767 INFO L140 encePairwiseOnDemand]: 523/526 looper letters, 109 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-19 08:07:07,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 794 flow [2023-11-19 08:07:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:07:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1018 transitions. [2023-11-19 08:07:07,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838403041825095 [2023-11-19 08:07:07,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1018 transitions. [2023-11-19 08:07:07,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1018 transitions. [2023-11-19 08:07:07,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:07,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1018 transitions. [2023-11-19 08:07:07,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 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 08:07:07,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:07:07,783 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 526.0) internal successors, (2630), 5 states have internal predecessors, (2630), 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 08:07:07,783 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 348 flow. Second operand 4 states and 1018 transitions. [2023-11-19 08:07:07,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 794 flow [2023-11-19 08:07:07,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 747 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-19 08:07:07,815 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 299 flow [2023-11-19 08:07:07,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-11-19 08:07:07,816 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-19 08:07:07,817 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 299 flow [2023-11-19 08:07:07,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 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 08:07:07,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:07,817 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:07,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:08,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:07:08,040 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:08,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash 730140701, now seen corresponding path program 2 times [2023-11-19 08:07:08,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:08,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599512692] [2023-11-19 08:07:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:08,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:07:08,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599512692] [2023-11-19 08:07:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599512692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588306779] [2023-11-19 08:07:08,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:07:08,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:08,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:08,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:07:08,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:07:08,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:08,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:08,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:07:08,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:07:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588306779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:08,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-19 08:07:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696199984] [2023-11-19 08:07:08,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:07:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:07:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:08,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 526 [2023-11-19 08:07:08,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 299 flow. Second operand has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 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 08:07:08,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:08,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 526 [2023-11-19 08:07:08,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:10,415 INFO L124 PetriNetUnfolderBase]: 11016/14491 cut-off events. [2023-11-19 08:07:10,415 INFO L125 PetriNetUnfolderBase]: For 13882/13882 co-relation queries the response was YES. [2023-11-19 08:07:10,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43135 conditions, 14491 events. 11016/14491 cut-off events. For 13882/13882 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 61253 event pairs, 1270 based on Foata normal form. 0/12473 useless extension candidates. Maximal degree in co-relation 27447. Up to 5328 conditions per place. [2023-11-19 08:07:10,481 INFO L140 encePairwiseOnDemand]: 513/526 looper letters, 137 selfloop transitions, 41 changer transitions 63/241 dead transitions. [2023-11-19 08:07:10,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 241 transitions, 1616 flow [2023-11-19 08:07:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:07:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 08:07:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3319 transitions. [2023-11-19 08:07:10,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420659062103929 [2023-11-19 08:07:10,494 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3319 transitions. [2023-11-19 08:07:10,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3319 transitions. [2023-11-19 08:07:10,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:10,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3319 transitions. [2023-11-19 08:07:10,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 221.26666666666668) internal successors, (3319), 15 states have internal predecessors, (3319), 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 08:07:10,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 526.0) internal successors, (8416), 16 states have internal predecessors, (8416), 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 08:07:10,518 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 526.0) internal successors, (8416), 16 states have internal predecessors, (8416), 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 08:07:10,518 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 299 flow. Second operand 15 states and 3319 transitions. [2023-11-19 08:07:10,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 241 transitions, 1616 flow [2023-11-19 08:07:10,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 241 transitions, 1610 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:10,570 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 488 flow [2023-11-19 08:07:10,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=488, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-11-19 08:07:10,571 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2023-11-19 08:07:10,571 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 488 flow [2023-11-19 08:07:10,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 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 08:07:10,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:10,573 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:10,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:07:10,800 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:07:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1302840314, now seen corresponding path program 2 times [2023-11-19 08:07:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922431134] [2023-11-19 08:07:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:07:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922431134] [2023-11-19 08:07:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922431134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760883899] [2023-11-19 08:07:10,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:07:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:10,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:10,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:07:11,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:07:11,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:11,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:11,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:07:11,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:07:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760883899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:11,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:11,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-19 08:07:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57702990] [2023-11-19 08:07:11,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:11,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:07:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:07:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:11,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 526 [2023-11-19 08:07:11,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 488 flow. Second operand has 10 states, 10 states have (on average 212.9) internal successors, (2129), 10 states have internal predecessors, (2129), 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 08:07:11,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:11,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 526 [2023-11-19 08:07:11,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:12,822 INFO L124 PetriNetUnfolderBase]: 7540/10075 cut-off events. [2023-11-19 08:07:12,822 INFO L125 PetriNetUnfolderBase]: For 14092/14092 co-relation queries the response was YES. [2023-11-19 08:07:12,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32890 conditions, 10075 events. 7540/10075 cut-off events. For 14092/14092 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 44384 event pairs, 706 based on Foata normal form. 228/8895 useless extension candidates. Maximal degree in co-relation 20558. Up to 2940 conditions per place. [2023-11-19 08:07:12,851 INFO L140 encePairwiseOnDemand]: 515/526 looper letters, 0 selfloop transitions, 0 changer transitions 208/208 dead transitions. [2023-11-19 08:07:12,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 208 transitions, 1544 flow [2023-11-19 08:07:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:07:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 08:07:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3284 transitions. [2023-11-19 08:07:12,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162230671736375 [2023-11-19 08:07:12,858 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3284 transitions. [2023-11-19 08:07:12,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3284 transitions. [2023-11-19 08:07:12,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:12,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3284 transitions. [2023-11-19 08:07:12,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 218.93333333333334) internal successors, (3284), 15 states have internal predecessors, (3284), 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 08:07:12,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 526.0) internal successors, (8416), 16 states have internal predecessors, (8416), 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 08:07:12,879 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 526.0) internal successors, (8416), 16 states have internal predecessors, (8416), 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 08:07:12,879 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 488 flow. Second operand 15 states and 3284 transitions. [2023-11-19 08:07:12,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 208 transitions, 1544 flow [2023-11-19 08:07:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 208 transitions, 1482 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-19 08:07:12,937 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2023-11-19 08:07:12,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=526, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2023-11-19 08:07:12,938 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2023-11-19 08:07:12,938 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2023-11-19 08:07:12,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.9) internal successors, (2129), 10 states have internal predecessors, (2129), 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 08:07:12,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-11-19 08:07:12,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-19 08:07:12,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-19 08:07:12,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-19 08:07:12,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-11-19 08:07:12,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-19 08:07:12,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-19 08:07:12,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-19 08:07:12,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-19 08:07:12,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-19 08:07:12,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-19 08:07:13,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:13,167 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:13,173 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:07:13,173 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:07:13,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:07:13 BasicIcfg [2023-11-19 08:07:13,177 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:07:13,178 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:07:13,178 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:07:13,178 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:07:13,179 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:38" (3/4) ... [2023-11-19 08:07:13,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:07:13,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 08:07:13,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 08:07:13,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 08:07:13,191 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-19 08:07:13,192 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:07:13,192 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:07:13,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:07:13,302 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:07:13,303 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:07:13,303 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:07:13,304 INFO L158 Benchmark]: Toolchain (without parser) took 36412.19ms. Allocated memory was 163.6MB in the beginning and 834.7MB in the end (delta: 671.1MB). Free memory was 121.4MB in the beginning and 590.3MB in the end (delta: -468.9MB). Peak memory consumption was 204.5MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,304 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:07:13,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.09ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 109.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 163.6MB. Free memory was 109.1MB in the beginning and 107.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,305 INFO L158 Benchmark]: Boogie Preprocessor took 57.49ms. Allocated memory is still 163.6MB. Free memory was 107.1MB in the beginning and 105.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,306 INFO L158 Benchmark]: RCFGBuilder took 772.97ms. Allocated memory is still 163.6MB. Free memory was 105.0MB in the beginning and 130.0MB in the end (delta: -25.0MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,306 INFO L158 Benchmark]: TraceAbstraction took 35060.88ms. Allocated memory was 163.6MB in the beginning and 834.7MB in the end (delta: 671.1MB). Free memory was 129.3MB in the beginning and 596.1MB in the end (delta: -466.8MB). Peak memory consumption was 547.1MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,307 INFO L158 Benchmark]: Witness Printer took 125.32ms. Allocated memory is still 834.7MB. Free memory was 596.1MB in the beginning and 590.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:07:13,309 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.09ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 109.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 163.6MB. Free memory was 109.1MB in the beginning and 107.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.49ms. Allocated memory is still 163.6MB. Free memory was 107.1MB in the beginning and 105.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 772.97ms. Allocated memory is still 163.6MB. Free memory was 105.0MB in the beginning and 130.0MB in the end (delta: -25.0MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 35060.88ms. Allocated memory was 163.6MB in the beginning and 834.7MB in the end (delta: 671.1MB). Free memory was 129.3MB in the beginning and 596.1MB in the end (delta: -466.8MB). Peak memory consumption was 547.1MB. Max. memory is 16.1GB. * Witness Printer took 125.32ms. Allocated memory is still 834.7MB. Free memory was 596.1MB in the beginning and 590.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.0s, 229 PlacesBefore, 46 PlacesAfterwards, 238 TransitionsBefore, 43 TransitionsAfterwards, 3642 CoEnabledTransitionPairs, 7 FixpointIterations, 153 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 261 TotalNumberOfCompositions, 5408 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3561, independent: 3451, independent conditional: 0, independent unconditional: 3451, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1937, independent: 1908, independent conditional: 0, independent unconditional: 1908, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3561, independent: 1543, independent conditional: 0, independent unconditional: 1543, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 1937, unknown conditional: 0, unknown unconditional: 1937] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 303 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.9s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3655 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2898 mSDsluCounter, 1535 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1390 mSDsCounter, 395 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7575 IncrementalHoareTripleChecker+Invalid, 7970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 395 mSolverCounterUnsat, 145 mSDtfsCounter, 7575 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 201 SyntacticMatches, 6 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=18, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 369 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 1176 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2214 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 240/329 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:07:13,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fd0b459-63fb-4a73-a69b-d0431f6c8026/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE