./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:27:10,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:27:10,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:27:10,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:27:10,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:27:10,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:27:10,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:27:10,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:27:10,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:27:10,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:27:10,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:27:10,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:27:10,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:27:10,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:27:10,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:27:10,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:27:10,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:27:10,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:27:10,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:27:10,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:27:10,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:27:10,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:27:10,392 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:27:10,392 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:27:10,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:27:10,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:27:10,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:27:10,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:27:10,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:27:10,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:27:10,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:10,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:27:10,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:27:10,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:27:10,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:27:10,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:27:10,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:27:10,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:27:10,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:27:10,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:27:10,399 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:27:10,400 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_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2023-11-06 22:27:10,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:27:10,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:27:10,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:27:10,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:27:10,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:27:10,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 22:27:13,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:27:14,185 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:27:14,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 22:27:14,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/data/19057924f/08df680bc4464f89971cc297853d9ded/FLAG70d147b04 [2023-11-06 22:27:14,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/data/19057924f/08df680bc4464f89971cc297853d9ded [2023-11-06 22:27:14,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:27:14,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:27:14,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:14,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:27:14,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:27:14,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceffa37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14, skipping insertion in model container [2023-11-06 22:27:14,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:27:14,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:14,511 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:27:14,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:14,569 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:27:14,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14 WrapperNode [2023-11-06 22:27:14,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:14,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:14,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:27:14,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:27:14,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,632 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 368 [2023-11-06 22:27:14,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:14,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:27:14,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:27:14,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:27:14,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:27:14,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:27:14,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:27:14,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:27:14,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (1/1) ... [2023-11-06 22:27:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:14,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:27:14,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:27:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:27:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:27:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:27:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:27:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:27:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:27:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:27:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:27:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:27:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:27:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:27:14,788 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:27:14,929 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:27:14,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:27:15,756 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:27:15,776 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:27:15,776 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:27:15,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:15 BoogieIcfgContainer [2023-11-06 22:27:15,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:27:15,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:27:15,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:27:15,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:27:15,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:14" (1/3) ... [2023-11-06 22:27:15,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e721546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:15, skipping insertion in model container [2023-11-06 22:27:15,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:14" (2/3) ... [2023-11-06 22:27:15,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e721546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:15, skipping insertion in model container [2023-11-06 22:27:15,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:15" (3/3) ... [2023-11-06 22:27:15,798 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-11-06 22:27:15,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:27:15,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:27:15,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:27:15,819 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:27:15,975 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:27:16,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 475 transitions, 971 flow [2023-11-06 22:27:16,292 INFO L124 PetriNetUnfolderBase]: 32/472 cut-off events. [2023-11-06 22:27:16,293 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:27:16,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 472 events. 32/472 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1334 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 345. Up to 2 conditions per place. [2023-11-06 22:27:16,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 475 transitions, 971 flow [2023-11-06 22:27:16,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 448 transitions, 911 flow [2023-11-06 22:27:16,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:27:16,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 448 transitions, 911 flow [2023-11-06 22:27:16,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 448 transitions, 911 flow [2023-11-06 22:27:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 448 transitions, 911 flow [2023-11-06 22:27:16,495 INFO L124 PetriNetUnfolderBase]: 31/448 cut-off events. [2023-11-06 22:27:16,495 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 448 events. 31/448 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1333 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 345. Up to 2 conditions per place. [2023-11-06 22:27:16,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 63438 [2023-11-06 22:27:43,089 INFO L134 LiptonReduction]: Checked pairs total: 59389 [2023-11-06 22:27:43,089 INFO L136 LiptonReduction]: Total number of compositions: 575 [2023-11-06 22:27:43,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:27:43,113 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=LoopsAndPotentialCycles, 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;@5b7d3a65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:27:43,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 22:27:43,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:27:43,117 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 22:27:43,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:27:43,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:43,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:27:43,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:43,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 63067, now seen corresponding path program 1 times [2023-11-06 22:27:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:43,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617655459] [2023-11-06 22:27:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:43,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617655459] [2023-11-06 22:27:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617655459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:27:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824127281] [2023-11-06 22:27:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:43,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 22:27:43,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:43,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 22:27:43,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:44,690 INFO L124 PetriNetUnfolderBase]: 3107/4424 cut-off events. [2023-11-06 22:27:44,690 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-11-06 22:27:44,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9071 conditions, 4424 events. 3107/4424 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 20870 event pairs, 2653 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 8144. Up to 4424 conditions per place. [2023-11-06 22:27:44,733 INFO L140 encePairwiseOnDemand]: 1036/1050 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-06 22:27:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 179 flow [2023-11-06 22:27:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1384 transitions. [2023-11-06 22:27:44,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43936507936507935 [2023-11-06 22:27:44,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1384 transitions. [2023-11-06 22:27:44,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1384 transitions. [2023-11-06 22:27:44,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:44,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1384 transitions. [2023-11-06 22:27:44,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.3333333333333) internal successors, (1384), 3 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:44,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:44,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:44,805 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1384 transitions. [2023-11-06 22:27:44,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 179 flow [2023-11-06 22:27:44,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:27:44,815 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 105 flow [2023-11-06 22:27:44,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-06 22:27:44,823 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 22:27:44,823 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 105 flow [2023-11-06 22:27:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:44,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:44,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:27:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:27:44,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:44,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1956888, now seen corresponding path program 1 times [2023-11-06 22:27:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370092993] [2023-11-06 22:27:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370092993] [2023-11-06 22:27:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370092993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464448417] [2023-11-06 22:27:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:45,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:45,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:27:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:45,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:27:45,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:45,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464448417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:45,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:27:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981919064] [2023-11-06 22:27:45,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:27:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:27:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:27:45,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 22:27:45,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 445.14285714285717) internal successors, (3116), 7 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:45,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:45,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 22:27:45,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:46,452 INFO L124 PetriNetUnfolderBase]: 3113/4433 cut-off events. [2023-11-06 22:27:46,453 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:27:46,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 4433 events. 3113/4433 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21123 event pairs, 2653 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 8971. Up to 4426 conditions per place. [2023-11-06 22:27:46,498 INFO L140 encePairwiseOnDemand]: 1045/1050 looper letters, 37 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-11-06 22:27:46,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 241 flow [2023-11-06 22:27:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:27:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:27:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3161 transitions. [2023-11-06 22:27:46,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43006802721088433 [2023-11-06 22:27:46,514 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3161 transitions. [2023-11-06 22:27:46,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3161 transitions. [2023-11-06 22:27:46,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:46,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3161 transitions. [2023-11-06 22:27:46,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 451.57142857142856) internal successors, (3161), 7 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1050.0) internal successors, (8400), 8 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1050.0) internal successors, (8400), 8 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,563 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 105 flow. Second operand 7 states and 3161 transitions. [2023-11-06 22:27:46,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 241 flow [2023-11-06 22:27:46,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:46,568 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 184 flow [2023-11-06 22:27:46,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-06 22:27:46,571 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-06 22:27:46,571 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 184 flow [2023-11-06 22:27:46,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 445.14285714285717) internal successors, (3116), 7 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:46,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:27:46,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:46,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:46,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 60665337, now seen corresponding path program 1 times [2023-11-06 22:27:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063931264] [2023-11-06 22:27:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063931264] [2023-11-06 22:27:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063931264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:46,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:46,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864782054] [2023-11-06 22:27:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:46,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:46,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:46,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 22:27:46,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 445.3333333333333) internal successors, (1336), 3 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 22:27:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:47,769 INFO L124 PetriNetUnfolderBase]: 3110/4429 cut-off events. [2023-11-06 22:27:47,770 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 22:27:47,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9033 conditions, 4429 events. 3110/4429 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21122 event pairs, 2653 based on Foata normal form. 0/1715 useless extension candidates. Maximal degree in co-relation 8997. Up to 4423 conditions per place. [2023-11-06 22:27:47,814 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-11-06 22:27:47,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 249 flow [2023-11-06 22:27:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2023-11-06 22:27:47,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-11-06 22:27:47,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1371 transitions. [2023-11-06 22:27:47,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1371 transitions. [2023-11-06 22:27:47,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:47,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1371 transitions. [2023-11-06 22:27:47,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,898 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 184 flow. Second operand 3 states and 1371 transitions. [2023-11-06 22:27:47,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 249 flow [2023-11-06 22:27:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 228 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:47,903 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 148 flow [2023-11-06 22:27:47,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 22:27:47,904 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-06 22:27:47,906 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 148 flow [2023-11-06 22:27:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.3333333333333) internal successors, (1336), 3 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:47,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:27:47,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:27:47,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:47,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1880003566, now seen corresponding path program 1 times [2023-11-06 22:27:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905337150] [2023-11-06 22:27:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:48,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:48,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905337150] [2023-11-06 22:27:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905337150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:48,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:48,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:27:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421806049] [2023-11-06 22:27:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:48,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:48,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:27:48,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:48,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:27:48,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:48,892 INFO L124 PetriNetUnfolderBase]: 2442/3485 cut-off events. [2023-11-06 22:27:48,893 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:27:48,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 3485 events. 2442/3485 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 15719 event pairs, 2051 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 7091. Up to 3485 conditions per place. [2023-11-06 22:27:48,924 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-06 22:27:48,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 232 flow [2023-11-06 22:27:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-11-06 22:27:48,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43777777777777777 [2023-11-06 22:27:48,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-11-06 22:27:48,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-11-06 22:27:48,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:48,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-11-06 22:27:48,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,955 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 148 flow. Second operand 3 states and 1379 transitions. [2023-11-06 22:27:48,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 232 flow [2023-11-06 22:27:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:48,961 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 134 flow [2023-11-06 22:27:48,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-06 22:27:48,964 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-11-06 22:27:48,964 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 134 flow [2023-11-06 22:27:48,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:48,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:27:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:27:48,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:48,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1880003611, now seen corresponding path program 1 times [2023-11-06 22:27:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:48,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157246778] [2023-11-06 22:27:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157246778] [2023-11-06 22:27:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157246778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:49,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467028459] [2023-11-06 22:27:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:49,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 1050 [2023-11-06 22:27:49,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:49,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 1050 [2023-11-06 22:27:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:49,866 INFO L124 PetriNetUnfolderBase]: 2441/3484 cut-off events. [2023-11-06 22:27:49,866 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:27:49,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 3484 events. 2441/3484 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 15744 event pairs, 2051 based on Foata normal form. 1/1428 useless extension candidates. Maximal degree in co-relation 7104. Up to 3484 conditions per place. [2023-11-06 22:27:49,892 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:27:49,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 215 flow [2023-11-06 22:27:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1367 transitions. [2023-11-06 22:27:49,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43396825396825395 [2023-11-06 22:27:49,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1367 transitions. [2023-11-06 22:27:49,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1367 transitions. [2023-11-06 22:27:49,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:49,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1367 transitions. [2023-11-06 22:27:49,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,916 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 134 flow. Second operand 3 states and 1367 transitions. [2023-11-06 22:27:49,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 215 flow [2023-11-06 22:27:49,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:49,919 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 132 flow [2023-11-06 22:27:49,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-06 22:27:49,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-06 22:27:49,920 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 132 flow [2023-11-06 22:27:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:49,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:27:49,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:27:49,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:49,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1830717122, now seen corresponding path program 1 times [2023-11-06 22:27:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:49,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427573409] [2023-11-06 22:27:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427573409] [2023-11-06 22:27:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427573409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303926513] [2023-11-06 22:27:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:50,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:27:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:50,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:27:50,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:50,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303926513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:50,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:50,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:27:50,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069916214] [2023-11-06 22:27:50,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:50,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:50,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:50,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:27:50,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:50,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:27:50,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:51,101 INFO L124 PetriNetUnfolderBase]: 3437/4866 cut-off events. [2023-11-06 22:27:51,101 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:27:51,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9916 conditions, 4866 events. 3437/4866 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 24355 event pairs, 1769 based on Foata normal form. 0/2023 useless extension candidates. Maximal degree in co-relation 9903. Up to 3041 conditions per place. [2023-11-06 22:27:51,127 INFO L140 encePairwiseOnDemand]: 1044/1050 looper letters, 67 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-11-06 22:27:51,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 331 flow [2023-11-06 22:27:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1401 transitions. [2023-11-06 22:27:51,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476190476190475 [2023-11-06 22:27:51,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1401 transitions. [2023-11-06 22:27:51,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1401 transitions. [2023-11-06 22:27:51,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:51,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1401 transitions. [2023-11-06 22:27:51,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,150 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 132 flow. Second operand 3 states and 1401 transitions. [2023-11-06 22:27:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 331 flow [2023-11-06 22:27:51,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:51,153 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 154 flow [2023-11-06 22:27:51,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-06 22:27:51,154 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-06 22:27:51,155 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 154 flow [2023-11-06 22:27:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:51,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:51,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:51,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:51,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:51,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash -917654531, now seen corresponding path program 1 times [2023-11-06 22:27:51,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754130196] [2023-11-06 22:27:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754130196] [2023-11-06 22:27:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754130196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917279933] [2023-11-06 22:27:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:51,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:51,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:51,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:27:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:51,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:51,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917279933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:51,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:51,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:27:51,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649800818] [2023-11-06 22:27:51,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:51,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:27:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:27:51,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:27:51,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1050 [2023-11-06 22:27:51,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 154 flow. Second operand has 8 states, 8 states have (on average 442.625) internal successors, (3541), 8 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:51,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1050 [2023-11-06 22:27:51,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:52,901 INFO L124 PetriNetUnfolderBase]: 3435/4864 cut-off events. [2023-11-06 22:27:52,901 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2023-11-06 22:27:52,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11337 conditions, 4864 events. 3435/4864 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 22899 event pairs, 2821 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 11324. Up to 4861 conditions per place. [2023-11-06 22:27:52,938 INFO L140 encePairwiseOnDemand]: 1046/1050 looper letters, 38 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-11-06 22:27:52,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 230 flow [2023-11-06 22:27:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:27:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:27:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2246 transitions. [2023-11-06 22:27:52,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278095238095238 [2023-11-06 22:27:52,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2246 transitions. [2023-11-06 22:27:52,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2246 transitions. [2023-11-06 22:27:52,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:52,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2246 transitions. [2023-11-06 22:27:52,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 449.2) internal successors, (2246), 5 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,976 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 154 flow. Second operand 5 states and 2246 transitions. [2023-11-06 22:27:52,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 230 flow [2023-11-06 22:27:52,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:52,980 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 148 flow [2023-11-06 22:27:52,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-06 22:27:52,982 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-06 22:27:52,982 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 148 flow [2023-11-06 22:27:52,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 442.625) internal successors, (3541), 8 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:52,984 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:27:52,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:53,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:53,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:53,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1830093413, now seen corresponding path program 2 times [2023-11-06 22:27:53,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:53,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142159542] [2023-11-06 22:27:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142159542] [2023-11-06 22:27:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142159542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575748510] [2023-11-06 22:27:53,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:53,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:53,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:53,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:53,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:27:53,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:27:53,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:53,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:53,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:53,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575748510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:53,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:53,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:27:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448249287] [2023-11-06 22:27:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:53,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:27:53,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1050 [2023-11-06 22:27:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1050 [2023-11-06 22:27:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:54,432 INFO L124 PetriNetUnfolderBase]: 3435/4863 cut-off events. [2023-11-06 22:27:54,432 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-06 22:27:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10945 conditions, 4863 events. 3435/4863 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 22887 event pairs, 2821 based on Foata normal form. 1/2281 useless extension candidates. Maximal degree in co-relation 10931. Up to 4858 conditions per place. [2023-11-06 22:27:54,465 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-06 22:27:54,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 220 flow [2023-11-06 22:27:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1374 transitions. [2023-11-06 22:27:54,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361904761904762 [2023-11-06 22:27:54,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1374 transitions. [2023-11-06 22:27:54,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1374 transitions. [2023-11-06 22:27:54,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:54,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1374 transitions. [2023-11-06 22:27:54,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:54,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:54,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:54,485 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 148 flow. Second operand 3 states and 1374 transitions. [2023-11-06 22:27:54,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 220 flow [2023-11-06 22:27:54,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 199 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-06 22:27:54,488 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 121 flow [2023-11-06 22:27:54,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-06 22:27:54,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-06 22:27:54,492 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 121 flow [2023-11-06 22:27:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:54,493 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:54,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:54,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:54,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -15548323, now seen corresponding path program 2 times [2023-11-06 22:27:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:54,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050172098] [2023-11-06 22:27:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:54,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050172098] [2023-11-06 22:27:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050172098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455208967] [2023-11-06 22:27:54,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:54,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:54,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:54,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:54,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:27:54,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:27:54,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:54,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:27:54,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:54,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455208967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:54,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:27:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384675795] [2023-11-06 22:27:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:54,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:54,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:54,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:27:54,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 446.75) internal successors, (1787), 4 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:54,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:54,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:27:54,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:55,863 INFO L124 PetriNetUnfolderBase]: 2991/4289 cut-off events. [2023-11-06 22:27:55,863 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-06 22:27:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9508 conditions, 4289 events. 2991/4289 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 23095 event pairs, 153 based on Foata normal form. 0/2143 useless extension candidates. Maximal degree in co-relation 9498. Up to 2714 conditions per place. [2023-11-06 22:27:55,884 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 83 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-06 22:27:55,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 85 transitions, 381 flow [2023-11-06 22:27:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1862 transitions. [2023-11-06 22:27:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2023-11-06 22:27:55,893 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1862 transitions. [2023-11-06 22:27:55,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1862 transitions. [2023-11-06 22:27:55,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:55,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1862 transitions. [2023-11-06 22:27:55,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 465.5) internal successors, (1862), 4 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:55,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1050.0) internal successors, (5250), 5 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:55,910 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1050.0) internal successors, (5250), 5 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:55,910 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 121 flow. Second operand 4 states and 1862 transitions. [2023-11-06 22:27:55,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 85 transitions, 381 flow [2023-11-06 22:27:55,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:55,914 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 111 flow [2023-11-06 22:27:55,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-06 22:27:55,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-06 22:27:55,916 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 111 flow [2023-11-06 22:27:55,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 446.75) internal successors, (1787), 4 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:55,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:55,917 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:55,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:56,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:56,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash -15548306, now seen corresponding path program 1 times [2023-11-06 22:27:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526256188] [2023-11-06 22:27:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526256188] [2023-11-06 22:27:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526256188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913103658] [2023-11-06 22:27:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:56,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:56,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:56,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:56,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:27:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:56,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:56,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:27:56,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913103658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:56,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 22:27:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839445078] [2023-11-06 22:27:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:56,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:56,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:27:56,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:56,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:56,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:27:56,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:56,872 INFO L124 PetriNetUnfolderBase]: 2348/3376 cut-off events. [2023-11-06 22:27:56,873 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2023-11-06 22:27:56,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7666 conditions, 3376 events. 2348/3376 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 15225 event pairs, 1962 based on Foata normal form. 0/1797 useless extension candidates. Maximal degree in co-relation 7657. Up to 3376 conditions per place. [2023-11-06 22:27:56,885 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:27:56,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 181 flow [2023-11-06 22:27:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1375 transitions. [2023-11-06 22:27:56,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-11-06 22:27:56,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1375 transitions. [2023-11-06 22:27:56,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1375 transitions. [2023-11-06 22:27:56,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:56,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1375 transitions. [2023-11-06 22:27:56,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.3333333333333) internal successors, (1375), 3 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:56,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:56,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:56,904 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 111 flow. Second operand 3 states and 1375 transitions. [2023-11-06 22:27:56,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 181 flow [2023-11-06 22:27:56,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:56,906 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 104 flow [2023-11-06 22:27:56,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-06 22:27:56,907 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-06 22:27:56,907 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 104 flow [2023-11-06 22:27:56,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:56,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:56,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:56,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:27:57,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:57,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -15548308, now seen corresponding path program 1 times [2023-11-06 22:27:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870058059] [2023-11-06 22:27:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:57,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870058059] [2023-11-06 22:27:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870058059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079448885] [2023-11-06 22:27:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:57,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:57,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:57,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:27:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:57,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:27:57,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:27:57,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079448885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 22:27:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849053734] [2023-11-06 22:27:57,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:57,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:27:57,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:57,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:57,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:27:57,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:57,884 INFO L124 PetriNetUnfolderBase]: 1803/2601 cut-off events. [2023-11-06 22:27:57,884 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-11-06 22:27:57,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5804 conditions, 2601 events. 1803/2601 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11065 event pairs, 1477 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 5794. Up to 2601 conditions per place. [2023-11-06 22:27:57,895 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 22:27:57,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 170 flow [2023-11-06 22:27:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1373 transitions. [2023-11-06 22:27:57,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43587301587301586 [2023-11-06 22:27:57,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1373 transitions. [2023-11-06 22:27:57,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1373 transitions. [2023-11-06 22:27:57,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:57,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1373 transitions. [2023-11-06 22:27:57,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.6666666666667) internal successors, (1373), 3 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:57,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:57,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:57,913 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 104 flow. Second operand 3 states and 1373 transitions. [2023-11-06 22:27:57,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 170 flow [2023-11-06 22:27:57,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:57,916 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 99 flow [2023-11-06 22:27:57,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-06 22:27:57,917 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 22:27:57,917 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 99 flow [2023-11-06 22:27:57,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:57,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:58,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:58,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:58,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash -15548307, now seen corresponding path program 1 times [2023-11-06 22:27:58,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570896104] [2023-11-06 22:27:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570896104] [2023-11-06 22:27:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570896104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219188866] [2023-11-06 22:27:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:58,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:58,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:27:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:58,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:27:58,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:58,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219188866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:58,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:58,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:27:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925125432] [2023-11-06 22:27:58,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:58,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:27:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:27:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:27:58,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:27:58,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:58,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:58,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:27:58,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:59,420 INFO L124 PetriNetUnfolderBase]: 3123/4513 cut-off events. [2023-11-06 22:27:59,420 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-06 22:27:59,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9889 conditions, 4513 events. 3123/4513 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22935 event pairs, 901 based on Foata normal form. 0/2656 useless extension candidates. Maximal degree in co-relation 9878. Up to 1646 conditions per place. [2023-11-06 22:27:59,460 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 103 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-11-06 22:27:59,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 474 flow [2023-11-06 22:27:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:27:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:27:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2329 transitions. [2023-11-06 22:27:59,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44361904761904764 [2023-11-06 22:27:59,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2329 transitions. [2023-11-06 22:27:59,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2329 transitions. [2023-11-06 22:27:59,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:59,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2329 transitions. [2023-11-06 22:27:59,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 465.8) internal successors, (2329), 5 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:59,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:59,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:59,498 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 99 flow. Second operand 5 states and 2329 transitions. [2023-11-06 22:27:59,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 474 flow [2023-11-06 22:27:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 107 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:59,501 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 124 flow [2023-11-06 22:27:59,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-06 22:27:59,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-11-06 22:27:59,503 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 124 flow [2023-11-06 22:27:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:59,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:59,504 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:59,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:59,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:59,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:27:59,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash -483191191, now seen corresponding path program 1 times [2023-11-06 22:27:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158884273] [2023-11-06 22:27:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:27:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158884273] [2023-11-06 22:27:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158884273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:59,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:27:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830715288] [2023-11-06 22:27:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:59,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:27:59,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 449.6666666666667) internal successors, (1349), 3 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:59,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:27:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:00,519 INFO L124 PetriNetUnfolderBase]: 2283/3309 cut-off events. [2023-11-06 22:28:00,519 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2023-11-06 22:28:00,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 3309 events. 2283/3309 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14702 event pairs, 1871 based on Foata normal form. 0/2140 useless extension candidates. Maximal degree in co-relation 7934. Up to 3309 conditions per place. [2023-11-06 22:28:00,537 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 22:28:00,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 192 flow [2023-11-06 22:28:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2023-11-06 22:28:00,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-11-06 22:28:00,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1371 transitions. [2023-11-06 22:28:00,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1371 transitions. [2023-11-06 22:28:00,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:00,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1371 transitions. [2023-11-06 22:28:00,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:00,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:00,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:00,556 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 124 flow. Second operand 3 states and 1371 transitions. [2023-11-06 22:28:00,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 192 flow [2023-11-06 22:28:00,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 186 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:00,559 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 116 flow [2023-11-06 22:28:00,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-06 22:28:00,559 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-06 22:28:00,560 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 116 flow [2023-11-06 22:28:00,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.6666666666667) internal successors, (1349), 3 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:00,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:00,560 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:00,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:28:00,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:00,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash -483191140, now seen corresponding path program 1 times [2023-11-06 22:28:00,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:00,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769783996] [2023-11-06 22:28:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:00,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:00,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769783996] [2023-11-06 22:28:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769783996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311742173] [2023-11-06 22:28:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:00,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:28:00,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:00,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:00,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:28:00,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:01,490 INFO L124 PetriNetUnfolderBase]: 3063/4449 cut-off events. [2023-11-06 22:28:01,490 INFO L125 PetriNetUnfolderBase]: For 1919/1919 co-relation queries the response was YES. [2023-11-06 22:28:01,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10359 conditions, 4449 events. 3063/4449 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21479 event pairs, 1871 based on Foata normal form. 0/2928 useless extension candidates. Maximal degree in co-relation 10344. Up to 3310 conditions per place. [2023-11-06 22:28:01,506 INFO L140 encePairwiseOnDemand]: 1045/1050 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 22:28:01,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 301 flow [2023-11-06 22:28:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1384 transitions. [2023-11-06 22:28:01,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43936507936507935 [2023-11-06 22:28:01,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1384 transitions. [2023-11-06 22:28:01,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1384 transitions. [2023-11-06 22:28:01,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:01,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1384 transitions. [2023-11-06 22:28:01,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.3333333333333) internal successors, (1384), 3 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:01,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:01,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:01,525 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 116 flow. Second operand 3 states and 1384 transitions. [2023-11-06 22:28:01,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 301 flow [2023-11-06 22:28:01,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:01,528 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 131 flow [2023-11-06 22:28:01,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-06 22:28:01,529 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-06 22:28:01,529 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 131 flow [2023-11-06 22:28:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:01,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:01,530 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:01,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:28:01,530 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:01,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2094022366, now seen corresponding path program 1 times [2023-11-06 22:28:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239193841] [2023-11-06 22:28:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:01,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239193841] [2023-11-06 22:28:01,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239193841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130006605] [2023-11-06 22:28:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:01,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:01,633 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:01,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:28:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:28:01,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:01,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130006605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:01,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:28:01,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:28:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571259021] [2023-11-06 22:28:01,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:28:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:28:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:28:01,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:28:01,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 447.3333333333333) internal successors, (2684), 6 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:01,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:01,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:28:01,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:03,101 INFO L124 PetriNetUnfolderBase]: 4943/7049 cut-off events. [2023-11-06 22:28:03,102 INFO L125 PetriNetUnfolderBase]: For 3542/3542 co-relation queries the response was YES. [2023-11-06 22:28:03,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18024 conditions, 7049 events. 4943/7049 cut-off events. For 3542/3542 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 36059 event pairs, 1541 based on Foata normal form. 0/5144 useless extension candidates. Maximal degree in co-relation 18008. Up to 2780 conditions per place. [2023-11-06 22:28:03,131 INFO L140 encePairwiseOnDemand]: 1045/1050 looper letters, 111 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2023-11-06 22:28:03,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 118 transitions, 652 flow [2023-11-06 22:28:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:28:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:28:03,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2772 transitions. [2023-11-06 22:28:03,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-11-06 22:28:03,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2772 transitions. [2023-11-06 22:28:03,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2772 transitions. [2023-11-06 22:28:03,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:03,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2772 transitions. [2023-11-06 22:28:03,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 462.0) internal successors, (2772), 6 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:03,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1050.0) internal successors, (7350), 7 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:03,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1050.0) internal successors, (7350), 7 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:03,162 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 131 flow. Second operand 6 states and 2772 transitions. [2023-11-06 22:28:03,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 118 transitions, 652 flow [2023-11-06 22:28:03,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 118 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:03,168 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 175 flow [2023-11-06 22:28:03,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-06 22:28:03,169 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-06 22:28:03,169 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 175 flow [2023-11-06 22:28:03,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 447.3333333333333) internal successors, (2684), 6 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:03,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:03,170 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:03,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 22:28:03,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:28:03,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:03,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash -490182847, now seen corresponding path program 1 times [2023-11-06 22:28:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:03,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076631691] [2023-11-06 22:28:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:28:03,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:03,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076631691] [2023-11-06 22:28:03,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076631691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330716143] [2023-11-06 22:28:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:03,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:03,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:28:03,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:03,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:03,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:28:03,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:04,476 INFO L124 PetriNetUnfolderBase]: 4253/6199 cut-off events. [2023-11-06 22:28:04,476 INFO L125 PetriNetUnfolderBase]: For 6570/6570 co-relation queries the response was YES. [2023-11-06 22:28:04,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17270 conditions, 6199 events. 4253/6199 cut-off events. For 6570/6570 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 30778 event pairs, 3617 based on Foata normal form. 160/5178 useless extension candidates. Maximal degree in co-relation 17252. Up to 6199 conditions per place. [2023-11-06 22:28:04,498 INFO L140 encePairwiseOnDemand]: 1048/1050 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:28:04,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 231 flow [2023-11-06 22:28:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1363 transitions. [2023-11-06 22:28:04,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326984126984127 [2023-11-06 22:28:04,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1363 transitions. [2023-11-06 22:28:04,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1363 transitions. [2023-11-06 22:28:04,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:04,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1363 transitions. [2023-11-06 22:28:04,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 454.3333333333333) internal successors, (1363), 3 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:04,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:04,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:04,513 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 175 flow. Second operand 3 states and 1363 transitions. [2023-11-06 22:28:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 231 flow [2023-11-06 22:28:04,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 38 transitions, 225 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:04,518 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 151 flow [2023-11-06 22:28:04,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-06 22:28:04,519 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-06 22:28:04,520 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 151 flow [2023-11-06 22:28:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:04,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:04,520 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:28:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:28:04,521 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:04,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2056975731, now seen corresponding path program 2 times [2023-11-06 22:28:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199545851] [2023-11-06 22:28:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:28:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:04,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199545851] [2023-11-06 22:28:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199545851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:04,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:28:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224215272] [2023-11-06 22:28:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:04,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:28:04,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:04,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:04,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:28:04,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:05,538 INFO L124 PetriNetUnfolderBase]: 3591/5255 cut-off events. [2023-11-06 22:28:05,538 INFO L125 PetriNetUnfolderBase]: For 4595/4595 co-relation queries the response was YES. [2023-11-06 22:28:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13717 conditions, 5255 events. 3591/5255 cut-off events. For 4595/4595 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25467 event pairs, 3027 based on Foata normal form. 122/4500 useless extension candidates. Maximal degree in co-relation 13697. Up to 5255 conditions per place. [2023-11-06 22:28:05,563 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 22:28:05,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 36 transitions, 207 flow [2023-11-06 22:28:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1368 transitions. [2023-11-06 22:28:05,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2023-11-06 22:28:05,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1368 transitions. [2023-11-06 22:28:05,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1368 transitions. [2023-11-06 22:28:05,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:05,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1368 transitions. [2023-11-06 22:28:05,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:05,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:05,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:05,578 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 151 flow. Second operand 3 states and 1368 transitions. [2023-11-06 22:28:05,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 36 transitions, 207 flow [2023-11-06 22:28:05,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 198 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:28:05,583 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 128 flow [2023-11-06 22:28:05,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-11-06 22:28:05,584 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-06 22:28:05,584 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 128 flow [2023-11-06 22:28:05,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:05,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:05,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:05,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:28:05,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:05,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:05,586 INFO L85 PathProgramCache]: Analyzing trace with hash -488986097, now seen corresponding path program 1 times [2023-11-06 22:28:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282188352] [2023-11-06 22:28:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282188352] [2023-11-06 22:28:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282188352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:28:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448498475] [2023-11-06 22:28:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:05,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 22:28:05,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:05,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:05,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 22:28:05,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:06,597 INFO L124 PetriNetUnfolderBase]: 2669/3919 cut-off events. [2023-11-06 22:28:06,597 INFO L125 PetriNetUnfolderBase]: For 2309/2309 co-relation queries the response was YES. [2023-11-06 22:28:06,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 3919 events. 2669/3919 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17858 event pairs, 2187 based on Foata normal form. 122/3508 useless extension candidates. Maximal degree in co-relation 9661. Up to 3919 conditions per place. [2023-11-06 22:28:06,612 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 32 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2023-11-06 22:28:06,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 186 flow [2023-11-06 22:28:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1366 transitions. [2023-11-06 22:28:06,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336507936507937 [2023-11-06 22:28:06,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1366 transitions. [2023-11-06 22:28:06,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1366 transitions. [2023-11-06 22:28:06,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:06,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1366 transitions. [2023-11-06 22:28:06,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.3333333333333) internal successors, (1366), 3 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:06,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:06,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:06,626 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 128 flow. Second operand 3 states and 1366 transitions. [2023-11-06 22:28:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 186 flow [2023-11-06 22:28:06,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 177 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:28:06,630 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 109 flow [2023-11-06 22:28:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-11-06 22:28:06,631 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-06 22:28:06,631 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 109 flow [2023-11-06 22:28:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:06,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:06,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:28:06,632 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:06,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -488986087, now seen corresponding path program 1 times [2023-11-06 22:28:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:06,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691745277] [2023-11-06 22:28:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691745277] [2023-11-06 22:28:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691745277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:06,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:06,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343646187] [2023-11-06 22:28:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:06,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:28:06,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:06,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:06,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:28:06,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:07,329 INFO L124 PetriNetUnfolderBase]: 2669/3919 cut-off events. [2023-11-06 22:28:07,329 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-11-06 22:28:07,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9189 conditions, 3919 events. 2669/3919 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18348 event pairs, 1650 based on Foata normal form. 0/3652 useless extension candidates. Maximal degree in co-relation 9173. Up to 3073 conditions per place. [2023-11-06 22:28:07,346 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-06 22:28:07,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 270 flow [2023-11-06 22:28:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-06 22:28:07,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2023-11-06 22:28:07,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-06 22:28:07,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-06 22:28:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-06 22:28:07,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:07,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:07,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:07,359 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 109 flow. Second operand 3 states and 1370 transitions. [2023-11-06 22:28:07,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 270 flow [2023-11-06 22:28:07,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:07,361 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 120 flow [2023-11-06 22:28:07,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-11-06 22:28:07,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-06 22:28:07,361 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 120 flow [2023-11-06 22:28:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:07,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:07,362 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:07,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:28:07,362 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:28:07,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2021302450, now seen corresponding path program 1 times [2023-11-06 22:28:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:07,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756153738] [2023-11-06 22:28:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:07,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756153738] [2023-11-06 22:28:07,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756153738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:07,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:07,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:07,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406100666] [2023-11-06 22:28:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:07,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:07,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:07,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 22:28:07,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 22:28:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:08,091 INFO L124 PetriNetUnfolderBase]: 2088/3072 cut-off events. [2023-11-06 22:28:08,091 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2023-11-06 22:28:08,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8322 conditions, 3072 events. 2088/3072 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13375 event pairs, 1650 based on Foata normal form. 0/3071 useless extension candidates. Maximal degree in co-relation 8305. Up to 3072 conditions per place. [2023-11-06 22:28:08,098 INFO L140 encePairwiseOnDemand]: 1048/1050 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-06 22:28:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 33 transitions, 182 flow [2023-11-06 22:28:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1357 transitions. [2023-11-06 22:28:08,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307936507936508 [2023-11-06 22:28:08,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1357 transitions. [2023-11-06 22:28:08,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1357 transitions. [2023-11-06 22:28:08,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:08,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1357 transitions. [2023-11-06 22:28:08,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:08,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:08,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:08,107 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 120 flow. Second operand 3 states and 1357 transitions. [2023-11-06 22:28:08,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 33 transitions, 182 flow [2023-11-06 22:28:08,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:08,116 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-06 22:28:08,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-11-06 22:28:08,117 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-06 22:28:08,117 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-06 22:28:08,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:08,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-11-06 22:28:08,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-11-06 22:28:08,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-11-06 22:28:08,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-11-06 22:28:08,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-11-06 22:28:08,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-11-06 22:28:08,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-11-06 22:28:08,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-11-06 22:28:08,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-11-06 22:28:08,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-11-06 22:28:08,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-11-06 22:28:08,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-11-06 22:28:08,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-11-06 22:28:08,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-11-06 22:28:08,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-11-06 22:28:08,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-11-06 22:28:08,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-11-06 22:28:08,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-11-06 22:28:08,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-11-06 22:28:08,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-11-06 22:28:08,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-11-06 22:28:08,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-11-06 22:28:08,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-11-06 22:28:08,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:28:08,130 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:08,136 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:28:08,137 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:28:08,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:08 BasicIcfg [2023-11-06 22:28:08,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:28:08,141 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:28:08,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:28:08,142 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:28:08,143 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:15" (3/4) ... [2023-11-06 22:28:08,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:28:08,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:28:08,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:28:08,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:28:08,155 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 22:28:08,156 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:28:08,156 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:28:08,157 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:28:08,222 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:28:08,222 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:28:08,222 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:28:08,223 INFO L158 Benchmark]: Toolchain (without parser) took 54007.59ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 132.8MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 250.5MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,223 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 172.0MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:28:08,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.43ms. Allocated memory is still 172.0MB. Free memory was 132.5MB in the beginning and 119.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.47ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 116.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,225 INFO L158 Benchmark]: Boogie Preprocessor took 58.98ms. Allocated memory is still 172.0MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,225 INFO L158 Benchmark]: RCFGBuilder took 1086.70ms. Allocated memory is still 172.0MB. Free memory was 114.0MB in the beginning and 137.1MB in the end (delta: -23.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,225 INFO L158 Benchmark]: TraceAbstraction took 52358.65ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 136.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-11-06 22:28:08,226 INFO L158 Benchmark]: Witness Printer took 80.89ms. Allocated memory is still 2.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,228 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 172.0MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.43ms. Allocated memory is still 172.0MB. Free memory was 132.5MB in the beginning and 119.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.47ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 116.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.98ms. Allocated memory is still 172.0MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1086.70ms. Allocated memory is still 172.0MB. Free memory was 114.0MB in the beginning and 137.1MB in the end (delta: -23.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * TraceAbstraction took 52358.65ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 136.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 80.89ms. Allocated memory is still 2.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.7s, 427 PlacesBefore, 54 PlacesAfterwards, 448 TransitionsBefore, 48 TransitionsAfterwards, 63438 CoEnabledTransitionPairs, 8 FixpointIterations, 129 TrivialSequentialCompositions, 325 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 575 TotalNumberOfCompositions, 59389 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58860, independent: 58836, independent conditional: 0, independent unconditional: 58836, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 37319, independent: 37306, independent conditional: 0, independent unconditional: 37306, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 58860, independent: 21530, independent conditional: 0, independent unconditional: 21530, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 37319, unknown conditional: 0, unknown unconditional: 37319] , Statistics on independence cache: Total cache size (in pairs): 159, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 714 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 52.1s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 27.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 715 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1809 IncrementalHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 59 mSDtfsCounter, 1809 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=2, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 234 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 33 InterpolantComputations, 16 PerfectInterpolantSequences, 151/170 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:28:08,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9240659e-daf9-4c51-abcd-89dec6fef1d1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE