./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/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_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/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_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:58,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:58,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:55:58,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:58,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:58,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:58,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:58,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:58,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:58,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:58,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:58,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:58,451 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:58,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:58,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:58,453 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:58,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:58,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:58,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:58,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:58,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:58,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:58,457 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:55:58,457 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:55:58,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:58,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:58,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:58,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:58,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:58,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:58,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:58,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:58,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:58,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:58,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:58,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:58,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:58,462 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:58,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:58,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:58,463 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:58,463 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_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2023-11-19 07:55:58,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:58,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:58,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:58,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:58,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:58,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-19 07:56:01,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:02,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:02,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-19 07:56:02,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/data/62aa7aaf5/7712892551ff4802869f57dd2a661bbf/FLAGcfd160043 [2023-11-19 07:56:02,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/data/62aa7aaf5/7712892551ff4802869f57dd2a661bbf [2023-11-19 07:56:02,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:02,247 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:02,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:02,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:02,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:02,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642b5dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02, skipping insertion in model container [2023-11-19 07:56:02,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:02,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:02,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:02,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:02,673 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:02,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02 WrapperNode [2023-11-19 07:56:02,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:02,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:02,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:02,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:02,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,733 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2023-11-19 07:56:02,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:02,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:02,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:02,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:02,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:02,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:02,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:02,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:02,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (1/1) ... [2023-11-19 07:56:02,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:02,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:56:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:56:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:56:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:56:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:02,893 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:56:03,009 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:03,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:03,618 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:03,634 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:03,634 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:56:03,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:03 BoogieIcfgContainer [2023-11-19 07:56:03,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:03,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:03,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:03,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:03,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:02" (1/3) ... [2023-11-19 07:56:03,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1b31d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:03, skipping insertion in model container [2023-11-19 07:56:03,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:02" (2/3) ... [2023-11-19 07:56:03,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1b31d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:03, skipping insertion in model container [2023-11-19 07:56:03,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:03" (3/3) ... [2023-11-19 07:56:03,649 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-11-19 07:56:03,658 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:03,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:03,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-19 07:56:03,670 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:03,851 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:56:03,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 708 flow [2023-11-19 07:56:04,149 INFO L124 PetriNetUnfolderBase]: 23/345 cut-off events. [2023-11-19 07:56:04,149 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:56:04,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 345 events. 23/345 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 742 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 216. Up to 2 conditions per place. [2023-11-19 07:56:04,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 347 transitions, 708 flow [2023-11-19 07:56:04,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 324 transitions, 660 flow [2023-11-19 07:56:04,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:04,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 324 transitions, 660 flow [2023-11-19 07:56:04,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 324 transitions, 660 flow [2023-11-19 07:56:04,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 324 transitions, 660 flow [2023-11-19 07:56:04,269 INFO L124 PetriNetUnfolderBase]: 22/324 cut-off events. [2023-11-19 07:56:04,270 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:56:04,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 324 events. 22/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 745 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 216. Up to 2 conditions per place. [2023-11-19 07:56:04,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 22148 [2023-11-19 07:56:22,432 INFO L134 LiptonReduction]: Checked pairs total: 21655 [2023-11-19 07:56:22,433 INFO L136 LiptonReduction]: Total number of compositions: 420 [2023-11-19 07:56:22,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:22,456 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;@5b3ca9b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:22,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 07:56:22,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:22,459 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-19 07:56:22,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:22,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:22,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:22,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:22,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash 46061, now seen corresponding path program 1 times [2023-11-19 07:56:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667166021] [2023-11-19 07:56:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:22,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667166021] [2023-11-19 07:56:22,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667166021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:22,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:22,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717545733] [2023-11-19 07:56:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:22,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-19 07:56:22,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:22,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-19 07:56:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:23,028 INFO L124 PetriNetUnfolderBase]: 226/390 cut-off events. [2023-11-19 07:56:23,028 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-19 07:56:23,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 390 events. 226/390 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1580 event pairs, 189 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 720. Up to 388 conditions per place. [2023-11-19 07:56:23,034 INFO L140 encePairwiseOnDemand]: 756/767 looper letters, 24 selfloop transitions, 2 changer transitions 1/27 dead transitions. [2023-11-19 07:56:23,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-11-19 07:56:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-11-19 07:56:23,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43415906127770537 [2023-11-19 07:56:23,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-11-19 07:56:23,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-11-19 07:56:23,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:23,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-11-19 07:56:23,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,089 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 999 transitions. [2023-11-19 07:56:23,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-11-19 07:56:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:23,095 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 59 flow [2023-11-19 07:56:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-19 07:56:23,101 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-11-19 07:56:23,102 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 59 flow [2023-11-19 07:56:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:23,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:23,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:23,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:23,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash 46062, now seen corresponding path program 1 times [2023-11-19 07:56:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622237343] [2023-11-19 07:56:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622237343] [2023-11-19 07:56:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622237343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:23,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962797468] [2023-11-19 07:56:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:23,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:23,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-19 07:56:23,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:23,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-19 07:56:23,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:23,370 INFO L124 PetriNetUnfolderBase]: 227/391 cut-off events. [2023-11-19 07:56:23,371 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 391 events. 227/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1580 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 779. Up to 391 conditions per place. [2023-11-19 07:56:23,374 INFO L140 encePairwiseOnDemand]: 763/767 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-19 07:56:23,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 121 flow [2023-11-19 07:56:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-11-19 07:56:23,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311169056931769 [2023-11-19 07:56:23,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-11-19 07:56:23,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-11-19 07:56:23,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:23,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-11-19 07:56:23,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,395 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 992 transitions. [2023-11-19 07:56:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 121 flow [2023-11-19 07:56:23,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:23,397 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 74 flow [2023-11-19 07:56:23,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-11-19 07:56:23,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-11-19 07:56:23,399 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 74 flow [2023-11-19 07:56:23,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:23,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:56:23,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:23,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:23,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1429189, now seen corresponding path program 1 times [2023-11-19 07:56:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93729211] [2023-11-19 07:56:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93729211] [2023-11-19 07:56:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93729211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973573196] [2023-11-19 07:56:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:23,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:23,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:23,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:23,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:23,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:23,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973573196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:23,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:56:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177119253] [2023-11-19 07:56:23,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:23,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-19 07:56:23,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-19 07:56:23,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:24,006 INFO L124 PetriNetUnfolderBase]: 230/397 cut-off events. [2023-11-19 07:56:24,006 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:24,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 397 events. 230/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1591 event pairs, 189 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 779. Up to 394 conditions per place. [2023-11-19 07:56:24,010 INFO L140 encePairwiseOnDemand]: 763/767 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-11-19 07:56:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 166 flow [2023-11-19 07:56:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1963 transitions. [2023-11-19 07:56:24,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265536723163842 [2023-11-19 07:56:24,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1963 transitions. [2023-11-19 07:56:24,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1963 transitions. [2023-11-19 07:56:24,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:24,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1963 transitions. [2023-11-19 07:56:24,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.1666666666667) internal successors, (1963), 6 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,043 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 74 flow. Second operand 6 states and 1963 transitions. [2023-11-19 07:56:24,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 166 flow [2023-11-19 07:56:24,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 161 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:24,047 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 130 flow [2023-11-19 07:56:24,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-19 07:56:24,049 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-19 07:56:24,050 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 130 flow [2023-11-19 07:56:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:24,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:56:24,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:56:24,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:24,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:24,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1373490847, now seen corresponding path program 1 times [2023-11-19 07:56:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723479187] [2023-11-19 07:56:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:24,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723479187] [2023-11-19 07:56:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723479187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:24,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645267669] [2023-11-19 07:56:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:24,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:24,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-19 07:56:24,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:24,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-19 07:56:24,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:24,688 INFO L124 PetriNetUnfolderBase]: 298/517 cut-off events. [2023-11-19 07:56:24,688 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:56:24,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 517 events. 298/517 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2378 event pairs, 189 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 1047. Up to 398 conditions per place. [2023-11-19 07:56:24,693 INFO L140 encePairwiseOnDemand]: 760/767 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-19 07:56:24,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 260 flow [2023-11-19 07:56:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-11-19 07:56:24,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398087787918296 [2023-11-19 07:56:24,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-11-19 07:56:24,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-11-19 07:56:24,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:24,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-11-19 07:56:24,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,712 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 130 flow. Second operand 3 states and 1012 transitions. [2023-11-19 07:56:24,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 260 flow [2023-11-19 07:56:24,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 239 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:24,716 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 129 flow [2023-11-19 07:56:24,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-11-19 07:56:24,717 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-19 07:56:24,717 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 129 flow [2023-11-19 07:56:24,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:24,719 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:56:24,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:24,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -371445330, now seen corresponding path program 2 times [2023-11-19 07:56:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854693888] [2023-11-19 07:56:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:24,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:24,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:24,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854693888] [2023-11-19 07:56:24,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854693888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43825437] [2023-11-19 07:56:24,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:56:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:24,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:24,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:56:25,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:56:25,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:25,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:56:25,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:25,034 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 07:56:25,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43825437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:56:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734491748] [2023-11-19 07:56:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:25,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:25,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:25,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 767 [2023-11-19 07:56:25,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:25,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 767 [2023-11-19 07:56:25,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:25,215 INFO L124 PetriNetUnfolderBase]: 298/516 cut-off events. [2023-11-19 07:56:25,215 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-19 07:56:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 516 events. 298/516 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2188 event pairs, 251 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 1204. Up to 511 conditions per place. [2023-11-19 07:56:25,220 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-11-19 07:56:25,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 187 flow [2023-11-19 07:56:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-19 07:56:25,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324206866579748 [2023-11-19 07:56:25,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-19 07:56:25,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-19 07:56:25,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:25,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-19 07:56:25,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,238 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 129 flow. Second operand 3 states and 995 transitions. [2023-11-19 07:56:25,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 187 flow [2023-11-19 07:56:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 169 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 07:56:25,242 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 113 flow [2023-11-19 07:56:25,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-11-19 07:56:25,244 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-19 07:56:25,245 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 113 flow [2023-11-19 07:56:25,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:25,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:56:25,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:25,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -371456575, now seen corresponding path program 1 times [2023-11-19 07:56:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374693806] [2023-11-19 07:56:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374693806] [2023-11-19 07:56:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374693806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770529037] [2023-11-19 07:56:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:25,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-19 07:56:25,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:25,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-19 07:56:25,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:25,700 INFO L124 PetriNetUnfolderBase]: 272/472 cut-off events. [2023-11-19 07:56:25,700 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-19 07:56:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 472 events. 272/472 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1951 event pairs, 227 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 1058. Up to 472 conditions per place. [2023-11-19 07:56:25,705 INFO L140 encePairwiseOnDemand]: 765/767 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-19 07:56:25,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 175 flow [2023-11-19 07:56:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2023-11-19 07:56:25,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43068231203824425 [2023-11-19 07:56:25,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2023-11-19 07:56:25,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2023-11-19 07:56:25,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:25,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2023-11-19 07:56:25,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,722 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 113 flow. Second operand 3 states and 991 transitions. [2023-11-19 07:56:25,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 175 flow [2023-11-19 07:56:25,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:25,724 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-11-19 07:56:25,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-19 07:56:25,725 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2023-11-19 07:56:25,725 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-11-19 07:56:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:25,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:56:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:25,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:25,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash -371456580, now seen corresponding path program 1 times [2023-11-19 07:56:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:25,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165051828] [2023-11-19 07:56:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165051828] [2023-11-19 07:56:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165051828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558290929] [2023-11-19 07:56:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:25,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:25,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:25,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:56:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:25,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:25,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:25,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558290929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:56:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620597360] [2023-11-19 07:56:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:25,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:25,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 767 [2023-11-19 07:56:25,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:25,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 767 [2023-11-19 07:56:25,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:26,111 INFO L124 PetriNetUnfolderBase]: 271/471 cut-off events. [2023-11-19 07:56:26,111 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-19 07:56:26,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 471 events. 271/471 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1942 event pairs, 227 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 1081. Up to 471 conditions per place. [2023-11-19 07:56:26,115 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 30 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-19 07:56:26,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 159 flow [2023-11-19 07:56:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2023-11-19 07:56:26,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285093437635811 [2023-11-19 07:56:26,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2023-11-19 07:56:26,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2023-11-19 07:56:26,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:26,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2023-11-19 07:56:26,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,131 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 3 states and 986 transitions. [2023-11-19 07:56:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 159 flow [2023-11-19 07:56:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:26,133 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 98 flow [2023-11-19 07:56:26,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-19 07:56:26,134 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-19 07:56:26,134 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 98 flow [2023-11-19 07:56:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:26,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:26,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:26,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:56:26,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:26,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1370086717, now seen corresponding path program 1 times [2023-11-19 07:56:26,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:26,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258092176] [2023-11-19 07:56:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258092176] [2023-11-19 07:56:26,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258092176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309797754] [2023-11-19 07:56:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:26,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:26,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:56:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:26,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:56:26,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:26,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:26,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309797754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:26,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:26,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-19 07:56:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382483126] [2023-11-19 07:56:26,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:26,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:56:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:56:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:56:26,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 767 [2023-11-19 07:56:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 316.125) internal successors, (2529), 8 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:26,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 767 [2023-11-19 07:56:26,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:26,995 INFO L124 PetriNetUnfolderBase]: 337/589 cut-off events. [2023-11-19 07:56:26,995 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-19 07:56:26,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 589 events. 337/589 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2753 event pairs, 165 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 1336. Up to 347 conditions per place. [2023-11-19 07:56:27,000 INFO L140 encePairwiseOnDemand]: 758/767 looper letters, 52 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-19 07:56:27,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 272 flow [2023-11-19 07:56:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:56:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-11-19 07:56:27,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211212516297262 [2023-11-19 07:56:27,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-11-19 07:56:27,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-11-19 07:56:27,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:27,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-11-19 07:56:27,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 767.0) internal successors, (6136), 8 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 767.0) internal successors, (6136), 8 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,053 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 98 flow. Second operand 7 states and 2261 transitions. [2023-11-19 07:56:27,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 272 flow [2023-11-19 07:56:27,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:27,055 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 116 flow [2023-11-19 07:56:27,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-19 07:56:27,056 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-11-19 07:56:27,056 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 116 flow [2023-11-19 07:56:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 316.125) internal successors, (2529), 8 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:27,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-19 07:56:27,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:56:27,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:27,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1513979399, now seen corresponding path program 2 times [2023-11-19 07:56:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:27,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469679014] [2023-11-19 07:56:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:27,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469679014] [2023-11-19 07:56:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469679014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637914754] [2023-11-19 07:56:27,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:56:27,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:27,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:27,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:56:27,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:56:27,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:27,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:27,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:56:27,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637914754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-19 07:56:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927973609] [2023-11-19 07:56:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:27,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-19 07:56:27,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:27,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-19 07:56:27,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:27,718 INFO L124 PetriNetUnfolderBase]: 275/483 cut-off events. [2023-11-19 07:56:27,718 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-11-19 07:56:27,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 483 events. 275/483 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2001 event pairs, 231 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 1221. Up to 483 conditions per place. [2023-11-19 07:56:27,723 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-19 07:56:27,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 166 flow [2023-11-19 07:56:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-11-19 07:56:27,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43285528031290743 [2023-11-19 07:56:27,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-11-19 07:56:27,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-11-19 07:56:27,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:27,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-11-19 07:56:27,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,742 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 116 flow. Second operand 3 states and 996 transitions. [2023-11-19 07:56:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 166 flow [2023-11-19 07:56:27,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 152 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-19 07:56:27,745 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 96 flow [2023-11-19 07:56:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-19 07:56:27,747 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-19 07:56:27,748 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 96 flow [2023-11-19 07:56:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:27,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:27,748 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-19 07:56:27,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:27,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1513979398, now seen corresponding path program 1 times [2023-11-19 07:56:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738053806] [2023-11-19 07:56:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738053806] [2023-11-19 07:56:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738053806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606067943] [2023-11-19 07:56:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:28,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:28,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:28,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:56:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:28,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:28,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:28,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606067943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:28,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-19 07:56:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680141904] [2023-11-19 07:56:28,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:28,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-19 07:56:28,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:28,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-19 07:56:28,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:28,635 INFO L124 PetriNetUnfolderBase]: 335/589 cut-off events. [2023-11-19 07:56:28,635 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 07:56:28,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 589 events. 335/589 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2716 event pairs, 123 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 1416. Up to 272 conditions per place. [2023-11-19 07:56:28,639 INFO L140 encePairwiseOnDemand]: 762/767 looper letters, 65 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-19 07:56:28,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 69 transitions, 324 flow [2023-11-19 07:56:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:56:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1677 transitions. [2023-11-19 07:56:28,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43728813559322033 [2023-11-19 07:56:28,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1677 transitions. [2023-11-19 07:56:28,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1677 transitions. [2023-11-19 07:56:28,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:28,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1677 transitions. [2023-11-19 07:56:28,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 767.0) internal successors, (4602), 6 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 767.0) internal successors, (4602), 6 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,663 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 96 flow. Second operand 5 states and 1677 transitions. [2023-11-19 07:56:28,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 69 transitions, 324 flow [2023-11-19 07:56:28,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:28,666 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 119 flow [2023-11-19 07:56:28,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-19 07:56:28,667 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-19 07:56:28,667 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 119 flow [2023-11-19 07:56:28,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:28,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:28,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:28,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:28,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:28,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1514806569, now seen corresponding path program 1 times [2023-11-19 07:56:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023534189] [2023-11-19 07:56:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023534189] [2023-11-19 07:56:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023534189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:28,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:28,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:28,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108718826] [2023-11-19 07:56:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:28,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-19 07:56:28,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:28,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:28,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-19 07:56:28,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:29,163 INFO L124 PetriNetUnfolderBase]: 423/741 cut-off events. [2023-11-19 07:56:29,163 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-11-19 07:56:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 741 events. 423/741 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3443 event pairs, 285 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 1956. Up to 590 conditions per place. [2023-11-19 07:56:29,171 INFO L140 encePairwiseOnDemand]: 761/767 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-19 07:56:29,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 282 flow [2023-11-19 07:56:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-11-19 07:56:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-11-19 07:56:29,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-11-19 07:56:29,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-11-19 07:56:29,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:29,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-11-19 07:56:29,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,189 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 119 flow. Second operand 3 states and 1003 transitions. [2023-11-19 07:56:29,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 282 flow [2023-11-19 07:56:29,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 262 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:29,191 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 127 flow [2023-11-19 07:56:29,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-19 07:56:29,192 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-19 07:56:29,193 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 127 flow [2023-11-19 07:56:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:29,193 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:56:29,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:56:29,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:29,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash -311278692, now seen corresponding path program 2 times [2023-11-19 07:56:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546221259] [2023-11-19 07:56:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:56:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546221259] [2023-11-19 07:56:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546221259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:29,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533053978] [2023-11-19 07:56:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:29,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:29,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-19 07:56:29,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:29,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-19 07:56:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:29,506 INFO L124 PetriNetUnfolderBase]: 353/621 cut-off events. [2023-11-19 07:56:29,506 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-11-19 07:56:29,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 621 events. 353/621 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2657 event pairs, 303 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 1735. Up to 621 conditions per place. [2023-11-19 07:56:29,511 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-19 07:56:29,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 173 flow [2023-11-19 07:56:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-11-19 07:56:29,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43198609300304214 [2023-11-19 07:56:29,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-11-19 07:56:29,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-11-19 07:56:29,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:29,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-11-19 07:56:29,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,527 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 127 flow. Second operand 3 states and 994 transitions. [2023-11-19 07:56:29,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 173 flow [2023-11-19 07:56:29,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:29,529 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 115 flow [2023-11-19 07:56:29,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-19 07:56:29,532 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-11-19 07:56:29,533 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 115 flow [2023-11-19 07:56:29,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:29,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:56:29,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:56:29,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:29,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -311278690, now seen corresponding path program 1 times [2023-11-19 07:56:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:29,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550422241] [2023-11-19 07:56:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:56:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550422241] [2023-11-19 07:56:29,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550422241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:29,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:29,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107582169] [2023-11-19 07:56:29,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:29,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:29,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:29,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:29,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-19 07:56:29,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:29,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-19 07:56:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:29,809 INFO L124 PetriNetUnfolderBase]: 289/511 cut-off events. [2023-11-19 07:56:29,809 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-11-19 07:56:29,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 511 events. 289/511 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2041 event pairs, 243 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 1366. Up to 511 conditions per place. [2023-11-19 07:56:29,813 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-19 07:56:29,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 157 flow [2023-11-19 07:56:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-11-19 07:56:29,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311169056931769 [2023-11-19 07:56:29,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-11-19 07:56:29,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-11-19 07:56:29,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:29,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-11-19 07:56:29,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,828 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 115 flow. Second operand 3 states and 992 transitions. [2023-11-19 07:56:29,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 157 flow [2023-11-19 07:56:29,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:29,830 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 104 flow [2023-11-19 07:56:29,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-19 07:56:29,831 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-19 07:56:29,831 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 104 flow [2023-11-19 07:56:29,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:29,832 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:56:29,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:56:29,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:29,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash -311278733, now seen corresponding path program 1 times [2023-11-19 07:56:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:29,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178395506] [2023-11-19 07:56:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:56:29,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:29,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178395506] [2023-11-19 07:56:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178395506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189184853] [2023-11-19 07:56:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:29,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:29,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-19 07:56:29,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:29,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-19 07:56:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:30,040 INFO L124 PetriNetUnfolderBase]: 231/411 cut-off events. [2023-11-19 07:56:30,041 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-11-19 07:56:30,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 411 events. 231/411 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1542 event pairs, 189 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 1063. Up to 411 conditions per place. [2023-11-19 07:56:30,044 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 23 selfloop transitions, 1 changer transitions 1/25 dead transitions. [2023-11-19 07:56:30,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 142 flow [2023-11-19 07:56:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-19 07:56:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302477183833116 [2023-11-19 07:56:30,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-19 07:56:30,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-19 07:56:30,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:30,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-19 07:56:30,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,059 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 104 flow. Second operand 3 states and 990 transitions. [2023-11-19 07:56:30,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 142 flow [2023-11-19 07:56:30,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:30,061 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 91 flow [2023-11-19 07:56:30,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-19 07:56:30,062 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-11-19 07:56:30,062 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 91 flow [2023-11-19 07:56:30,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:30,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:30,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:56:30,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-19 07:56:30,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash -285635822, now seen corresponding path program 1 times [2023-11-19 07:56:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:30,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328294634] [2023-11-19 07:56:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:56:30,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:30,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328294634] [2023-11-19 07:56:30,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328294634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:30,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:30,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783330725] [2023-11-19 07:56:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:30,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:30,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-19 07:56:30,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:30,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-19 07:56:30,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:30,191 INFO L124 PetriNetUnfolderBase]: 126/228 cut-off events. [2023-11-19 07:56:30,192 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-19 07:56:30,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 228 events. 126/228 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 90 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 617. Up to 228 conditions per place. [2023-11-19 07:56:30,193 INFO L140 encePairwiseOnDemand]: 765/767 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-11-19 07:56:30,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 133 flow [2023-11-19 07:56:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-11-19 07:56:30,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42633637548891784 [2023-11-19 07:56:30,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-11-19 07:56:30,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-11-19 07:56:30,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:30,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-11-19 07:56:30,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,209 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 91 flow. Second operand 3 states and 981 transitions. [2023-11-19 07:56:30,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 133 flow [2023-11-19 07:56:30,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 130 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:30,210 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-19 07:56:30,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-19 07:56:30,211 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-19 07:56:30,211 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-19 07:56:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:30,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2023-11-19 07:56:30,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2023-11-19 07:56:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2023-11-19 07:56:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2023-11-19 07:56:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2023-11-19 07:56:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2023-11-19 07:56:30,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2023-11-19 07:56:30,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2023-11-19 07:56:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2023-11-19 07:56:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2023-11-19 07:56:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2023-11-19 07:56:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2023-11-19 07:56:30,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2023-11-19 07:56:30,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2023-11-19 07:56:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2023-11-19 07:56:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2023-11-19 07:56:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2023-11-19 07:56:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2023-11-19 07:56:30,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2023-11-19 07:56:30,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2023-11-19 07:56:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2023-11-19 07:56:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2023-11-19 07:56:30,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2023-11-19 07:56:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:56:30,221 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:30,227 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:56:30,228 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:56:30,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:56:30 BasicIcfg [2023-11-19 07:56:30,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:56:30,232 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:56:30,232 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:56:30,233 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:56:30,233 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:03" (3/4) ... [2023-11-19 07:56:30,235 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:56:30,239 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:56:30,239 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:56:30,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-19 07:56:30,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:56:30,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:56:30,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:56:30,372 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:56:30,373 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:56:30,373 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:56:30,374 INFO L158 Benchmark]: Toolchain (without parser) took 28126.98ms. Allocated memory was 123.7MB in the beginning and 327.2MB in the end (delta: 203.4MB). Free memory was 78.1MB in the beginning and 290.0MB in the end (delta: -211.9MB). Peak memory consumption was 152.8MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,374 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:30,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.71ms. Allocated memory is still 123.7MB. Free memory was 77.8MB in the beginning and 65.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.68ms. Allocated memory is still 123.7MB. Free memory was 65.4MB in the beginning and 62.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,376 INFO L158 Benchmark]: Boogie Preprocessor took 80.03ms. Allocated memory is still 123.7MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,376 INFO L158 Benchmark]: RCFGBuilder took 823.05ms. Allocated memory is still 123.7MB. Free memory was 60.7MB in the beginning and 77.8MB in the end (delta: -17.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,377 INFO L158 Benchmark]: TraceAbstraction took 26589.34ms. Allocated memory was 123.7MB in the beginning and 272.6MB in the end (delta: 148.9MB). Free memory was 77.2MB in the beginning and 81.9MB in the end (delta: -4.7MB). Peak memory consumption was 142.6MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,377 INFO L158 Benchmark]: Witness Printer took 141.24ms. Allocated memory was 272.6MB in the beginning and 327.2MB in the end (delta: 54.5MB). Free memory was 81.9MB in the beginning and 290.0MB in the end (delta: -208.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-11-19 07:56:30,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.71ms. Allocated memory is still 123.7MB. Free memory was 77.8MB in the beginning and 65.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.68ms. Allocated memory is still 123.7MB. Free memory was 65.4MB in the beginning and 62.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.03ms. Allocated memory is still 123.7MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 823.05ms. Allocated memory is still 123.7MB. Free memory was 60.7MB in the beginning and 77.8MB in the end (delta: -17.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 26589.34ms. Allocated memory was 123.7MB in the beginning and 272.6MB in the end (delta: 148.9MB). Free memory was 77.2MB in the beginning and 81.9MB in the end (delta: -4.7MB). Peak memory consumption was 142.6MB. Max. memory is 16.1GB. * Witness Printer took 141.24ms. Allocated memory was 272.6MB in the beginning and 327.2MB in the end (delta: 54.5MB). Free memory was 81.9MB in the beginning and 290.0MB in the end (delta: -208.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.2s, 309 PlacesBefore, 40 PlacesAfterwards, 324 TransitionsBefore, 36 TransitionsAfterwards, 22148 CoEnabledTransitionPairs, 9 FixpointIterations, 111 TrivialSequentialCompositions, 222 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 56 ConcurrentYvCompositions, 19 ChoiceCompositions, 420 TotalNumberOfCompositions, 21655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21368, independent: 21354, independent conditional: 0, independent unconditional: 21354, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13133, independent: 13128, independent conditional: 0, independent unconditional: 13128, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21368, independent: 8226, independent conditional: 0, independent unconditional: 8226, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 13133, unknown conditional: 0, unknown unconditional: 13133] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: 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 5 procedures, 507 locations, 38 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: 26.3s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 608 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1183 IncrementalHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 72 mSDtfsCounter, 1183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 153 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 5 NumberOfNonLiveVariables, 772 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 104/126 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:56:30,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d4ce5d-9366-49dd-8fff-ee85b044bacd/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