./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl --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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:18,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:18,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:15:18,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:18,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:18,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:18,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:18,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:18,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:18,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:18,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:18,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:18,310 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:18,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:18,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:18,314 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:18,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:18,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:18,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:18,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:18,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:18,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:18,317 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:15:18,318 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:15:18,318 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:18,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:18,319 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:18,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:18,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:18,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:18,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:18,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:18,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:18,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:15:18,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:18,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:18,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:18,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:15:18,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:18,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:18,325 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:18,326 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_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2023-11-12 02:15:18,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:18,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:18,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:18,666 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:18,667 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:18,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2023-11-12 02:15:21,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:22,084 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:22,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2023-11-12 02:15:22,097 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/data/98f6d910d/36e43467d1574be58495333faea57b31/FLAG26cb56ca8 [2023-11-12 02:15:22,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/data/98f6d910d/36e43467d1574be58495333faea57b31 [2023-11-12 02:15:22,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:22,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:22,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:22,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:22,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:22,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4228a485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22, skipping insertion in model container [2023-11-12 02:15:22,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:22,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:22,383 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:22,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:22,431 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:22,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22 WrapperNode [2023-11-12 02:15:22,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:22,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:22,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:22,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:22,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,483 INFO L138 Inliner]: procedures = 25, calls = 38, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 239 [2023-11-12 02:15:22,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:22,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:22,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:22,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:22,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:22,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:22,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:22,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:22,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (1/1) ... [2023-11-12 02:15:22,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:22,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:22,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:15:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:15:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:15:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:15:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:15:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:15:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:15:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:22,645 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:15:22,788 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:22,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:23,371 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:23,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:23,386 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:15:23,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:23 BoogieIcfgContainer [2023-11-12 02:15:23,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:23,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:23,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:23,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:23,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:22" (1/3) ... [2023-11-12 02:15:23,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70699fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:23, skipping insertion in model container [2023-11-12 02:15:23,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:22" (2/3) ... [2023-11-12 02:15:23,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70699fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:23, skipping insertion in model container [2023-11-12 02:15:23,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:23" (3/3) ... [2023-11-12 02:15:23,408 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2023-11-12 02:15:23,419 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:15:23,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:23,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 02:15:23,430 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:15:23,569 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:15:23,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 328 transitions, 670 flow [2023-11-12 02:15:23,762 INFO L124 PetriNetUnfolderBase]: 25/326 cut-off events. [2023-11-12 02:15:23,762 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:15:23,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 326 events. 25/326 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-11-12 02:15:23,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 328 transitions, 670 flow [2023-11-12 02:15:23,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 585 flow [2023-11-12 02:15:23,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:15:23,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 288 transitions, 585 flow [2023-11-12 02:15:23,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 288 transitions, 585 flow [2023-11-12 02:15:23,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 288 transitions, 585 flow [2023-11-12 02:15:23,871 INFO L124 PetriNetUnfolderBase]: 22/288 cut-off events. [2023-11-12 02:15:23,871 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:15:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 288 events. 22/288 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 399 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-11-12 02:15:23,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 15200 [2023-11-12 02:15:41,693 INFO L134 LiptonReduction]: Checked pairs total: 16128 [2023-11-12 02:15:41,693 INFO L136 LiptonReduction]: Total number of compositions: 385 [2023-11-12 02:15:41,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:41,718 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;@24c8f081, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:41,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-12 02:15:41,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:15:41,721 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:15:41,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:41,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:15:41,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:41,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash 42794, now seen corresponding path program 1 times [2023-11-12 02:15:41,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075905816] [2023-11-12 02:15:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:42,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075905816] [2023-11-12 02:15:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075905816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:42,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:42,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:42,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847700552] [2023-11-12 02:15:42,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:42,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 713 [2023-11-12 02:15:42,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:42,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 713 [2023-11-12 02:15:42,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:42,417 INFO L124 PetriNetUnfolderBase]: 281/486 cut-off events. [2023-11-12 02:15:42,417 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-12 02:15:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 486 events. 281/486 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2017 event pairs, 237 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 900. Up to 484 conditions per place. [2023-11-12 02:15:42,425 INFO L140 encePairwiseOnDemand]: 699/713 looper letters, 32 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2023-11-12 02:15:42,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 157 flow [2023-11-12 02:15:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2023-11-12 02:15:42,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366526414212249 [2023-11-12 02:15:42,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2023-11-12 02:15:42,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2023-11-12 02:15:42,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:42,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2023-11-12 02:15:42,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,481 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 85 flow. Second operand 3 states and 934 transitions. [2023-11-12 02:15:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 157 flow [2023-11-12 02:15:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:15:42,487 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 114 flow [2023-11-12 02:15:42,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-12 02:15:42,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-11-12 02:15:42,494 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 114 flow [2023-11-12 02:15:42,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:42,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:15:42,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:42,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:42,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1330348, now seen corresponding path program 1 times [2023-11-12 02:15:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:42,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354253208] [2023-11-12 02:15:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354253208] [2023-11-12 02:15:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354253208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88028389] [2023-11-12 02:15:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:42,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:42,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:42,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:15:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:42,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:42,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:42,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88028389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:42,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:15:42,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:15:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78484640] [2023-11-12 02:15:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:42,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:15:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:15:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:42,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 713 [2023-11-12 02:15:42,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:42,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:42,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 713 [2023-11-12 02:15:42,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:43,038 INFO L124 PetriNetUnfolderBase]: 281/484 cut-off events. [2023-11-12 02:15:43,039 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:15:43,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 484 events. 281/484 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2005 event pairs, 237 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 967. Up to 476 conditions per place. [2023-11-12 02:15:43,043 INFO L140 encePairwiseOnDemand]: 706/713 looper letters, 29 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-11-12 02:15:43,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 176 flow [2023-11-12 02:15:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:15:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:15:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1221 transitions. [2023-11-12 02:15:43,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42812061711079946 [2023-11-12 02:15:43,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1221 transitions. [2023-11-12 02:15:43,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1221 transitions. [2023-11-12 02:15:43,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:43,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1221 transitions. [2023-11-12 02:15:43,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 713.0) internal successors, (3565), 5 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 713.0) internal successors, (3565), 5 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,075 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 114 flow. Second operand 4 states and 1221 transitions. [2023-11-12 02:15:43,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 176 flow [2023-11-12 02:15:43,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:43,077 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 108 flow [2023-11-12 02:15:43,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-11-12 02:15:43,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2023-11-12 02:15:43,079 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 108 flow [2023-11-12 02:15:43,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:43,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:15:43,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:43,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:43,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:43,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1330375, now seen corresponding path program 1 times [2023-11-12 02:15:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010900434] [2023-11-12 02:15:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:43,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010900434] [2023-11-12 02:15:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010900434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:43,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083858565] [2023-11-12 02:15:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:43,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:43,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:43,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:43,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:15:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:43,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:43,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:43,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:43,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083858565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:43,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:43,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:15:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557224893] [2023-11-12 02:15:43,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:43,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:15:43,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:43,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:15:43,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:43,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 713 [2023-11-12 02:15:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:43,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 713 [2023-11-12 02:15:43,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:43,882 INFO L124 PetriNetUnfolderBase]: 287/496 cut-off events. [2023-11-12 02:15:43,883 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:15:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 496 events. 287/496 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2054 event pairs, 237 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 967. Up to 485 conditions per place. [2023-11-12 02:15:43,887 INFO L140 encePairwiseOnDemand]: 706/713 looper letters, 30 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2023-11-12 02:15:43,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 262 flow [2023-11-12 02:15:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:15:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1829 transitions. [2023-11-12 02:15:43,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2023-11-12 02:15:43,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1829 transitions. [2023-11-12 02:15:43,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1829 transitions. [2023-11-12 02:15:43,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:43,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1829 transitions. [2023-11-12 02:15:43,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 304.8333333333333) internal successors, (1829), 6 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 713.0) internal successors, (4991), 7 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 713.0) internal successors, (4991), 7 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,918 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 108 flow. Second operand 6 states and 1829 transitions. [2023-11-12 02:15:43,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 262 flow [2023-11-12 02:15:43,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:43,920 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 224 flow [2023-11-12 02:15:43,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-11-12 02:15:43,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-12 02:15:43,922 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 224 flow [2023-11-12 02:15:43,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:43,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:43,924 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:15:43,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:44,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:44,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:44,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash 981399493, now seen corresponding path program 2 times [2023-11-12 02:15:44,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:44,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535118399] [2023-11-12 02:15:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535118399] [2023-11-12 02:15:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535118399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606548663] [2023-11-12 02:15:44,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:44,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:44,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:44,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:15:44,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:15:44,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:44,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:44,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:44,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:44,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606548663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:44,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:15:44,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:15:44,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642416579] [2023-11-12 02:15:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:44,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:15:44,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 713 [2023-11-12 02:15:44,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:44,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 713 [2023-11-12 02:15:44,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:44,627 INFO L124 PetriNetUnfolderBase]: 287/494 cut-off events. [2023-11-12 02:15:44,631 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-12 02:15:44,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 494 events. 287/494 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2041 event pairs, 237 based on Foata normal form. 2/238 useless extension candidates. Maximal degree in co-relation 1018. Up to 479 conditions per place. [2023-11-12 02:15:44,635 INFO L140 encePairwiseOnDemand]: 709/713 looper letters, 39 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-11-12 02:15:44,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 294 flow [2023-11-12 02:15:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2023-11-12 02:15:44,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43525011687704535 [2023-11-12 02:15:44,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 931 transitions. [2023-11-12 02:15:44,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 931 transitions. [2023-11-12 02:15:44,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:44,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 931 transitions. [2023-11-12 02:15:44,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,654 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 224 flow. Second operand 3 states and 931 transitions. [2023-11-12 02:15:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 294 flow [2023-11-12 02:15:44,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 236 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:44,662 INFO L231 Difference]: Finished difference. Result has 37 places, 45 transitions, 158 flow [2023-11-12 02:15:44,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=37, PETRI_TRANSITIONS=45} [2023-11-12 02:15:44,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-11-12 02:15:44,665 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 45 transitions, 158 flow [2023-11-12 02:15:44,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:44,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:44,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:44,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:44,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:44,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1436993375, now seen corresponding path program 1 times [2023-11-12 02:15:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818556596] [2023-11-12 02:15:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:44,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818556596] [2023-11-12 02:15:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818556596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:44,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:44,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:44,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476749369] [2023-11-12 02:15:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:44,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:44,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:45,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 713 [2023-11-12 02:15:45,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 45 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:45,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 713 [2023-11-12 02:15:45,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:45,235 INFO L124 PetriNetUnfolderBase]: 285/492 cut-off events. [2023-11-12 02:15:45,249 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-12 02:15:45,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 492 events. 285/492 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2026 event pairs, 237 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 967. Up to 488 conditions per place. [2023-11-12 02:15:45,253 INFO L140 encePairwiseOnDemand]: 708/713 looper letters, 36 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-12 02:15:45,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 234 flow [2023-11-12 02:15:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-11-12 02:15:45,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277699859747546 [2023-11-12 02:15:45,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-11-12 02:15:45,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-11-12 02:15:45,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:45,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-11-12 02:15:45,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,274 INFO L175 Difference]: Start difference. First operand has 37 places, 45 transitions, 158 flow. Second operand 3 states and 915 transitions. [2023-11-12 02:15:45,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 234 flow [2023-11-12 02:15:45,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:45,277 INFO L231 Difference]: Finished difference. Result has 37 places, 43 transitions, 152 flow [2023-11-12 02:15:45,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=37, PETRI_TRANSITIONS=43} [2023-11-12 02:15:45,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-11-12 02:15:45,279 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 43 transitions, 152 flow [2023-11-12 02:15:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:45,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:45,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:45,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 846753116, now seen corresponding path program 1 times [2023-11-12 02:15:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308140223] [2023-11-12 02:15:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308140223] [2023-11-12 02:15:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308140223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118548116] [2023-11-12 02:15:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:45,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:45,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:45,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:45,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:15:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:45,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:45,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118548116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:45,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-12 02:15:45,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383091740] [2023-11-12 02:15:45,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:45,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:15:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:15:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:15:45,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 713 [2023-11-12 02:15:45,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 43 transitions, 152 flow. Second operand has 8 states, 8 states have (on average 291.875) internal successors, (2335), 8 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:45,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 713 [2023-11-12 02:15:45,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:45,958 INFO L124 PetriNetUnfolderBase]: 279/486 cut-off events. [2023-11-12 02:15:45,958 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-12 02:15:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 486 events. 279/486 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2005 event pairs, 237 based on Foata normal form. 6/234 useless extension candidates. Maximal degree in co-relation 982. Up to 479 conditions per place. [2023-11-12 02:15:45,962 INFO L140 encePairwiseOnDemand]: 708/713 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-11-12 02:15:45,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 190 flow [2023-11-12 02:15:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:15:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1783 transitions. [2023-11-12 02:15:45,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416783543712015 [2023-11-12 02:15:45,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1783 transitions. [2023-11-12 02:15:45,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1783 transitions. [2023-11-12 02:15:45,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:45,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1783 transitions. [2023-11-12 02:15:45,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.1666666666667) internal successors, (1783), 6 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 713.0) internal successors, (4991), 7 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 713.0) internal successors, (4991), 7 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,993 INFO L175 Difference]: Start difference. First operand has 37 places, 43 transitions, 152 flow. Second operand 6 states and 1783 transitions. [2023-11-12 02:15:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 190 flow [2023-11-12 02:15:45,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:45,997 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 128 flow [2023-11-12 02:15:45,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-11-12 02:15:46,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-11-12 02:15:46,001 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 128 flow [2023-11-12 02:15:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 291.875) internal successors, (2335), 8 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:46,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:46,003 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:46,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:46,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:46,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1366599072, now seen corresponding path program 2 times [2023-11-12 02:15:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831163918] [2023-11-12 02:15:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831163918] [2023-11-12 02:15:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831163918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471476760] [2023-11-12 02:15:46,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:46,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:46,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:46,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:15:46,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:15:46,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:46,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:15:46,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:46,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471476760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:46,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-12 02:15:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505219852] [2023-11-12 02:15:46,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:46,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:15:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:15:46,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:15:47,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 713 [2023-11-12 02:15:47,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 128 flow. Second operand has 17 states, 17 states have (on average 291.4117647058824) internal successors, (4954), 17 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:47,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 713 [2023-11-12 02:15:47,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:47,316 INFO L124 PetriNetUnfolderBase]: 279/488 cut-off events. [2023-11-12 02:15:47,316 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:15:47,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 488 events. 279/488 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 1994 event pairs, 237 based on Foata normal form. 2/232 useless extension candidates. Maximal degree in co-relation 976. Up to 479 conditions per place. [2023-11-12 02:15:47,320 INFO L140 encePairwiseOnDemand]: 708/713 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-11-12 02:15:47,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 214 flow [2023-11-12 02:15:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:15:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2071 transitions. [2023-11-12 02:15:47,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41494690442797033 [2023-11-12 02:15:47,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2071 transitions. [2023-11-12 02:15:47,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2071 transitions. [2023-11-12 02:15:47,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:47,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2071 transitions. [2023-11-12 02:15:47,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 295.85714285714283) internal successors, (2071), 7 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 713.0) internal successors, (5704), 8 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 713.0) internal successors, (5704), 8 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,364 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 128 flow. Second operand 7 states and 2071 transitions. [2023-11-12 02:15:47,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 214 flow [2023-11-12 02:15:47,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 194 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:47,366 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 150 flow [2023-11-12 02:15:47,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=713, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-12 02:15:47,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-12 02:15:47,370 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 150 flow [2023-11-12 02:15:47,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 291.4117647058824) internal successors, (4954), 17 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:47,375 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:47,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:47,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:15:47,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:47,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -114086564, now seen corresponding path program 3 times [2023-11-12 02:15:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:47,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503131296] [2023-11-12 02:15:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:48,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503131296] [2023-11-12 02:15:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503131296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072339682] [2023-11-12 02:15:48,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:15:48,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:48,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:48,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103b55a4-faf5-4f2f-8ecd-7101112b4385/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:15:48,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-12 02:15:48,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:48,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-12 02:15:48,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:49,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-12 02:15:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:15:49,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:15:49,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-12 02:15:49,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-12 02:15:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-12 02:15:49,303 INFO L322 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-12 02:15:49,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:15:49,392 INFO L322 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-12 02:15:49,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-11-12 02:15:49,473 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:15:49,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 02:15:49,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:49,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 02:15:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:49,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:50,126 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_247 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_247))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 9223372039002259455 .cse0) (< .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)))))) (forall ((v_ArrVal_247 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_247))) (or (forall ((~o_2~0.base Int)) (not (= (select (select .cse2 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 0))) (< (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset) 2147483648))))) is different from false [2023-11-12 02:15:50,160 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_247))) (or (forall ((~o_2~0.base Int)) (not (= (select (select .cse0 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 0))) (< (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset) 2147483648)))) (forall ((v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_247))) (let ((.cse2 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (< .cse2 0) (< 9223372039002259455 .cse2)))))) is different from false