./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/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_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/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_32d8f590-665a-4d0e-a0ab-5a386043dbd4/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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:46:09,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:46:09,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:46:09,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:46:09,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:46:09,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:46:09,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:46:09,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:46:09,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:46:09,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:46:09,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:46:09,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:46:09,912 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:46:09,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:46:09,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:46:09,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:46:09,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:46:09,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:46:09,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:46:09,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:46:09,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:46:09,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:46:09,919 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:46:09,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:46:09,920 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:46:09,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:46:09,921 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:46:09,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:46:09,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:46:09,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:46:09,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:09,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:46:09,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:46:09,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:46:09,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:46:09,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:46:09,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:46:09,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:46:09,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:46:09,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:46:09,928 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:46:09,930 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_32d8f590-665a-4d0e-a0ab-5a386043dbd4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2023-11-06 22:46:10,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:46:10,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:46:10,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:46:10,246 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:46:10,247 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:46:10,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:46:13,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:46:13,638 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:46:13,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:46:13,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/data/da8702f25/4c2387fbae2a407095278999741708ed/FLAG2949654de [2023-11-06 22:46:13,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/data/da8702f25/4c2387fbae2a407095278999741708ed [2023-11-06 22:46:13,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:46:13,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:46:13,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:13,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:46:13,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:46:13,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:13,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794aabae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13, skipping insertion in model container [2023-11-06 22:46:13,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:13,704 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:46:13,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:13,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:46:13,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:13,979 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:46:13,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13 WrapperNode [2023-11-06 22:46:13,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:13,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:13,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:46:13,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:46:13,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:13,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,037 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 191 [2023-11-06 22:46:14,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:14,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:46:14,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:46:14,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:46:14,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:46:14,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:46:14,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:46:14,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:46:14,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2023-11-06 22:46:14,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:14,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:14,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:46:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:46:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:46:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:46:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:46:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:46:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:46:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:46:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:46:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:46:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:46:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:46:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:46:14,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:46:14,181 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 22:46:14,293 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:46:14,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:46:14,701 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:46:14,713 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:46:14,714 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:46:14,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:14 BoogieIcfgContainer [2023-11-06 22:46:14,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:46:14,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:46:14,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:46:14,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:46:14,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:13" (1/3) ... [2023-11-06 22:46:14,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda9004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:14, skipping insertion in model container [2023-11-06 22:46:14,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (2/3) ... [2023-11-06 22:46:14,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda9004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:14, skipping insertion in model container [2023-11-06 22:46:14,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:14" (3/3) ... [2023-11-06 22:46:14,727 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-06 22:46:14,736 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:46:14,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:46:14,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:46:14,749 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:46:14,883 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:46:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 236 transitions, 486 flow [2023-11-06 22:46:15,051 INFO L124 PetriNetUnfolderBase]: 19/234 cut-off events. [2023-11-06 22:46:15,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:46:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 234 events. 19/234 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 264 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-11-06 22:46:15,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 236 transitions, 486 flow [2023-11-06 22:46:15,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 213 transitions, 438 flow [2023-11-06 22:46:15,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:46:15,085 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 213 transitions, 438 flow [2023-11-06 22:46:15,088 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 213 transitions, 438 flow [2023-11-06 22:46:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 213 transitions, 438 flow [2023-11-06 22:46:15,145 INFO L124 PetriNetUnfolderBase]: 18/213 cut-off events. [2023-11-06 22:46:15,145 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:46:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 18/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 262 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-11-06 22:46:15,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 4212 [2023-11-06 22:46:23,128 INFO L134 LiptonReduction]: Checked pairs total: 5305 [2023-11-06 22:46:23,128 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-06 22:46:23,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:46:23,171 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;@7f1ce807, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:46:23,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-06 22:46:23,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:46:23,176 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:46:23,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:46:23,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:23,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:46:23,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:23,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash 29227, now seen corresponding path program 1 times [2023-11-06 22:46:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585164441] [2023-11-06 22:46:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:23,516 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 22:46:23,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:23,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585164441] [2023-11-06 22:46:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585164441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:23,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:23,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:46:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824882181] [2023-11-06 22:46:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:23,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:23,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 487 [2023-11-06 22:46:23,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:46:23,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:23,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 487 [2023-11-06 22:46:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:23,826 INFO L124 PetriNetUnfolderBase]: 145/248 cut-off events. [2023-11-06 22:46:23,826 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:46:23,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 248 events. 145/248 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 728 event pairs, 93 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 443. Up to 243 conditions per place. [2023-11-06 22:46:23,835 INFO L140 encePairwiseOnDemand]: 477/487 looper letters, 31 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2023-11-06 22:46:23,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 158 flow [2023-11-06 22:46:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2023-11-06 22:46:23,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45927446954141 [2023-11-06 22:46:23,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2023-11-06 22:46:23,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2023-11-06 22:46:23,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:23,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2023-11-06 22:46:23,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 22:46:23,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:23,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:23,895 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 671 transitions. [2023-11-06 22:46:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 158 flow [2023-11-06 22:46:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:46:23,902 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 114 flow [2023-11-06 22:46:23,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-11-06 22:46:23,912 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-06 22:46:23,912 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 114 flow [2023-11-06 22:46:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:46:23,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:23,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:46:23,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:46:23,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:23,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash 907271, now seen corresponding path program 1 times [2023-11-06 22:46:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316858846] [2023-11-06 22:46:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:24,055 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 22:46:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:24,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316858846] [2023-11-06 22:46:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316858846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:24,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774022873] [2023-11-06 22:46:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:24,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:24,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:46:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:24,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:46:24,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:24,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:24,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774022873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:24,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:24,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:46:24,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447502950] [2023-11-06 22:46:24,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:24,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:24,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:24,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 487 [2023-11-06 22:46:24,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 22:46:24,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:24,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 487 [2023-11-06 22:46:24,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:24,402 INFO L124 PetriNetUnfolderBase]: 145/246 cut-off events. [2023-11-06 22:46:24,402 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:46:24,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 246 events. 145/246 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 714 event pairs, 93 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 476. Up to 235 conditions per place. [2023-11-06 22:46:24,405 INFO L140 encePairwiseOnDemand]: 480/487 looper letters, 28 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-11-06 22:46:24,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 174 flow [2023-11-06 22:46:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:46:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 876 transitions. [2023-11-06 22:46:24,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44969199178644764 [2023-11-06 22:46:24,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 876 transitions. [2023-11-06 22:46:24,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 876 transitions. [2023-11-06 22:46:24,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:24,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 876 transitions. [2023-11-06 22:46:24,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 22:46:24,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:24,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:24,422 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 114 flow. Second operand 4 states and 876 transitions. [2023-11-06 22:46:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 174 flow [2023-11-06 22:46:24,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:24,425 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 108 flow [2023-11-06 22:46:24,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-11-06 22:46:24,426 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-11-06 22:46:24,426 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 108 flow [2023-11-06 22:46:24,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 22:46:24,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:24,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:46:24,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:24,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:24,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:24,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 907283, now seen corresponding path program 1 times [2023-11-06 22:46:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206094525] [2023-11-06 22:46:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:24,786 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 22:46:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206094525] [2023-11-06 22:46:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206094525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914162896] [2023-11-06 22:46:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:24,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:24,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:24,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:24,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:46:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:24,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:46:24,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:24,882 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 22:46:24,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:24,900 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 22:46:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914162896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:24,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:24,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:46:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070788910] [2023-11-06 22:46:24,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:24,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:46:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:46:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:46:24,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 487 [2023-11-06 22:46:24,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 211.14285714285714) internal successors, (1478), 7 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 22:46:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 487 [2023-11-06 22:46:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:25,106 INFO L124 PetriNetUnfolderBase]: 151/258 cut-off events. [2023-11-06 22:46:25,106 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:46:25,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 258 events. 151/258 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 760 event pairs, 93 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 476. Up to 244 conditions per place. [2023-11-06 22:46:25,109 INFO L140 encePairwiseOnDemand]: 480/487 looper letters, 29 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2023-11-06 22:46:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 260 flow [2023-11-06 22:46:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:46:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1312 transitions. [2023-11-06 22:46:25,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490075290896646 [2023-11-06 22:46:25,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1312 transitions. [2023-11-06 22:46:25,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1312 transitions. [2023-11-06 22:46:25,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:25,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1312 transitions. [2023-11-06 22:46:25,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 22:46:25,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 487.0) internal successors, (3409), 7 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states 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 22:46:25,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 487.0) internal successors, (3409), 7 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states 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 22:46:25,131 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 108 flow. Second operand 6 states and 1312 transitions. [2023-11-06 22:46:25,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 260 flow [2023-11-06 22:46:25,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:25,134 INFO L231 Difference]: Finished difference. Result has 39 places, 47 transitions, 224 flow [2023-11-06 22:46:25,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=39, PETRI_TRANSITIONS=47} [2023-11-06 22:46:25,135 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-06 22:46:25,135 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 224 flow [2023-11-06 22:46:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 211.14285714285714) internal successors, (1478), 7 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 22:46:25,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:25,137 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:46:25,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:25,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:25,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1259931959, now seen corresponding path program 2 times [2023-11-06 22:46:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:25,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381136964] [2023-11-06 22:46:25,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:25,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381136964] [2023-11-06 22:46:25,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381136964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:25,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867813377] [2023-11-06 22:46:25,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:46:25,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:25,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:25,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:25,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:46:25,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:46:25,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:46:25,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:46:25,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:25,682 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 22:46:25,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867813377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:25,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:46:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710920540] [2023-11-06 22:46:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:46:25,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 487 [2023-11-06 22:46:25,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 22:46:25,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:25,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 487 [2023-11-06 22:46:25,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:25,806 INFO L124 PetriNetUnfolderBase]: 151/256 cut-off events. [2023-11-06 22:46:25,809 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:25,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 256 events. 151/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 747 event pairs, 93 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 527. Up to 238 conditions per place. [2023-11-06 22:46:25,814 INFO L140 encePairwiseOnDemand]: 483/487 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-11-06 22:46:25,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 292 flow [2023-11-06 22:46:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-11-06 22:46:25,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459958932238193 [2023-11-06 22:46:25,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-11-06 22:46:25,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-11-06 22:46:25,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:25,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-11-06 22:46:25,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 22:46:25,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:25,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:25,834 INFO L175 Difference]: Start difference. First operand has 39 places, 47 transitions, 224 flow. Second operand 3 states and 672 transitions. [2023-11-06 22:46:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 292 flow [2023-11-06 22:46:25,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 234 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-06 22:46:25,842 INFO L231 Difference]: Finished difference. Result has 34 places, 45 transitions, 158 flow [2023-11-06 22:46:25,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=34, PETRI_TRANSITIONS=45} [2023-11-06 22:46:25,844 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-06 22:46:25,845 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 45 transitions, 158 flow [2023-11-06 22:46:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 22:46:25,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:25,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:25,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:26,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:26,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash 327859664, now seen corresponding path program 1 times [2023-11-06 22:46:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137509176] [2023-11-06 22:46:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:26,125 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 22:46:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137509176] [2023-11-06 22:46:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137509176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920554717] [2023-11-06 22:46:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:26,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 487 [2023-11-06 22:46:26,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 45 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:46:26,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:26,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 487 [2023-11-06 22:46:26,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:26,290 INFO L124 PetriNetUnfolderBase]: 149/254 cut-off events. [2023-11-06 22:46:26,291 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 254 events. 149/254 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 730 event pairs, 93 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 476. Up to 247 conditions per place. [2023-11-06 22:46:26,293 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 35 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-06 22:46:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 232 flow [2023-11-06 22:46:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-11-06 22:46:26,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490075290896646 [2023-11-06 22:46:26,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-11-06 22:46:26,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-11-06 22:46:26,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:26,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-11-06 22:46:26,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 22:46:26,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,306 INFO L175 Difference]: Start difference. First operand has 34 places, 45 transitions, 158 flow. Second operand 3 states and 656 transitions. [2023-11-06 22:46:26,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 232 flow [2023-11-06 22:46:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:26,308 INFO L231 Difference]: Finished difference. Result has 34 places, 43 transitions, 152 flow [2023-11-06 22:46:26,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=34, PETRI_TRANSITIONS=43} [2023-11-06 22:46:26,309 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-06 22:46:26,310 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 43 transitions, 152 flow [2023-11-06 22:46:26,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:46:26,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:26,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:26,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:46:26,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:26,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2031329601, now seen corresponding path program 1 times [2023-11-06 22:46:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:26,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051490674] [2023-11-06 22:46:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051490674] [2023-11-06 22:46:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051490674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121252848] [2023-11-06 22:46:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:26,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 487 [2023-11-06 22:46:26,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 43 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:26,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:26,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 487 [2023-11-06 22:46:26,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:26,480 INFO L124 PetriNetUnfolderBase]: 175/311 cut-off events. [2023-11-06 22:46:26,481 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:46:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 311 events. 175/311 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1048 event pairs, 93 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 616. Up to 242 conditions per place. [2023-11-06 22:46:26,484 INFO L140 encePairwiseOnDemand]: 483/487 looper letters, 54 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-06 22:46:26,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 291 flow [2023-11-06 22:46:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-11-06 22:46:26,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757015742642026 [2023-11-06 22:46:26,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-11-06 22:46:26,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-11-06 22:46:26,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:26,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-11-06 22:46:26,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 22:46:26,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,496 INFO L175 Difference]: Start difference. First operand has 34 places, 43 transitions, 152 flow. Second operand 3 states and 695 transitions. [2023-11-06 22:46:26,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 291 flow [2023-11-06 22:46:26,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:26,499 INFO L231 Difference]: Finished difference. Result has 35 places, 43 transitions, 147 flow [2023-11-06 22:46:26,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=35, PETRI_TRANSITIONS=43} [2023-11-06 22:46:26,501 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-06 22:46:26,501 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 43 transitions, 147 flow [2023-11-06 22:46:26,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:26,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:26,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:46:26,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:26,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2032442696, now seen corresponding path program 1 times [2023-11-06 22:46:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548141194] [2023-11-06 22:46:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:26,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548141194] [2023-11-06 22:46:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548141194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:26,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:26,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743936865] [2023-11-06 22:46:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:26,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:26,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 487 [2023-11-06 22:46:26,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 43 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 22:46:26,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 487 [2023-11-06 22:46:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:26,737 INFO L124 PetriNetUnfolderBase]: 247/437 cut-off events. [2023-11-06 22:46:26,738 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:46:26,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 437 events. 247/437 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1665 event pairs, 123 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 900. Up to 309 conditions per place. [2023-11-06 22:46:26,741 INFO L140 encePairwiseOnDemand]: 484/487 looper letters, 58 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-06 22:46:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 314 flow [2023-11-06 22:46:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2023-11-06 22:46:26,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798083504449008 [2023-11-06 22:46:26,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2023-11-06 22:46:26,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2023-11-06 22:46:26,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:26,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2023-11-06 22:46:26,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 22:46:26,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:26,753 INFO L175 Difference]: Start difference. First operand has 35 places, 43 transitions, 147 flow. Second operand 3 states and 701 transitions. [2023-11-06 22:46:26,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 314 flow [2023-11-06 22:46:26,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 61 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:26,756 INFO L231 Difference]: Finished difference. Result has 37 places, 44 transitions, 158 flow [2023-11-06 22:46:26,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=37, PETRI_TRANSITIONS=44} [2023-11-06 22:46:26,757 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-06 22:46:26,757 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 158 flow [2023-11-06 22:46:26,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 22:46:26,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:26,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:46:26,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:26,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1418786649, now seen corresponding path program 1 times [2023-11-06 22:46:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:26,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386032769] [2023-11-06 22:46:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:26,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386032769] [2023-11-06 22:46:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386032769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847094611] [2023-11-06 22:46:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:26,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:26,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:46:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:26,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:46:26,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:27,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847094611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:46:27,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815025713] [2023-11-06 22:46:27,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:27,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:46:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:46:27,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:46:27,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 487 [2023-11-06 22:46:27,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 206.125) internal successors, (1649), 8 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 22:46:27,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:27,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 487 [2023-11-06 22:46:27,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:27,331 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2023-11-06 22:46:27,331 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-06 22:46:27,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 431 events. 241/431 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1588 event pairs, 187 based on Foata normal form. 6/365 useless extension candidates. Maximal degree in co-relation 1020. Up to 421 conditions per place. [2023-11-06 22:46:27,335 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 27 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-11-06 22:46:27,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 202 flow [2023-11-06 22:46:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:46:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2023-11-06 22:46:27,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433264887063655 [2023-11-06 22:46:27,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2023-11-06 22:46:27,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2023-11-06 22:46:27,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:27,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2023-11-06 22:46:27,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 22:46:27,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 487.0) internal successors, (3409), 7 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states 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 22:46:27,353 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 487.0) internal successors, (3409), 7 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states 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 22:46:27,353 INFO L175 Difference]: Start difference. First operand has 37 places, 44 transitions, 158 flow. Second operand 6 states and 1266 transitions. [2023-11-06 22:46:27,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 202 flow [2023-11-06 22:46:27,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:27,355 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 146 flow [2023-11-06 22:46:27,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-06 22:46:27,356 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-06 22:46:27,356 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 146 flow [2023-11-06 22:46:27,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 206.125) internal successors, (1649), 8 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 22:46:27,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:27,358 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:27,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:27,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:46:27,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:27,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1221599400, now seen corresponding path program 2 times [2023-11-06 22:46:27,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027639955] [2023-11-06 22:46:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:46:27,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:27,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027639955] [2023-11-06 22:46:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027639955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659363916] [2023-11-06 22:46:27,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:46:27,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:27,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:27,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:46:27,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:46:27,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:46:27,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:46:27,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:46:28,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:46:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659363916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:28,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:46:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909659576] [2023-11-06 22:46:28,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:46:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:46:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:46:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 487 [2023-11-06 22:46:28,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 146 flow. Second operand has 17 states, 17 states have (on average 205.52941176470588) internal successors, (3494), 17 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states 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 22:46:28,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:28,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 487 [2023-11-06 22:46:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:28,516 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2023-11-06 22:46:28,516 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:46:28,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 433 events. 241/433 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1588 event pairs, 187 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1005. Up to 421 conditions per place. [2023-11-06 22:46:28,520 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 27 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-11-06 22:46:28,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 232 flow [2023-11-06 22:46:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:46:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:46:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1468 transitions. [2023-11-06 22:46:28,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43062481666177765 [2023-11-06 22:46:28,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1468 transitions. [2023-11-06 22:46:28,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1468 transitions. [2023-11-06 22:46:28,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:28,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1468 transitions. [2023-11-06 22:46:28,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.71428571428572) internal successors, (1468), 7 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states 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 22:46:28,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 487.0) internal successors, (3896), 8 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states 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 22:46:28,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 487.0) internal successors, (3896), 8 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states 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 22:46:28,542 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 146 flow. Second operand 7 states and 1468 transitions. [2023-11-06 22:46:28,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 232 flow [2023-11-06 22:46:28,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 212 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:46:28,544 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 168 flow [2023-11-06 22:46:28,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-06 22:46:28,545 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-06 22:46:28,545 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 168 flow [2023-11-06 22:46:28,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 205.52941176470588) internal successors, (3494), 17 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states 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 22:46:28,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:28,548 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:28,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:28,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:28,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:28,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1733657319, now seen corresponding path program 3 times [2023-11-06 22:46:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498343536] [2023-11-06 22:46:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498343536] [2023-11-06 22:46:28,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498343536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937181492] [2023-11-06 22:46:28,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:46:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:28,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:28,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:46:29,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:46:29,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:46:29,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:46:29,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:29,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937181492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:29,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:46:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303623145] [2023-11-06 22:46:29,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:29,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:29,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 487 [2023-11-06 22:46:29,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 22:46:29,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:29,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 487 [2023-11-06 22:46:29,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:29,258 INFO L124 PetriNetUnfolderBase]: 205/373 cut-off events. [2023-11-06 22:46:29,258 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:46:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 373 events. 205/373 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1388 event pairs, 27 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 852. Up to 150 conditions per place. [2023-11-06 22:46:29,261 INFO L140 encePairwiseOnDemand]: 484/487 looper letters, 66 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-06 22:46:29,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 379 flow [2023-11-06 22:46:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:46:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 931 transitions. [2023-11-06 22:46:29,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779260780287474 [2023-11-06 22:46:29,265 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 931 transitions. [2023-11-06 22:46:29,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 931 transitions. [2023-11-06 22:46:29,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:29,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 931 transitions. [2023-11-06 22:46:29,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:29,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:29,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:29,274 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 168 flow. Second operand 4 states and 931 transitions. [2023-11-06 22:46:29,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 379 flow [2023-11-06 22:46:29,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 359 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:46:29,277 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 148 flow [2023-11-06 22:46:29,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-06 22:46:29,278 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-06 22:46:29,278 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 148 flow [2023-11-06 22:46:29,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 22:46:29,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:29,279 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:29,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:29,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:29,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1140284744, now seen corresponding path program 1 times [2023-11-06 22:46:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070781578] [2023-11-06 22:46:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:29,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070781578] [2023-11-06 22:46:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070781578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:29,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:29,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:29,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580853478] [2023-11-06 22:46:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:29,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 487 [2023-11-06 22:46:29,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 22:46:29,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:29,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 487 [2023-11-06 22:46:29,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:29,758 INFO L124 PetriNetUnfolderBase]: 356/661 cut-off events. [2023-11-06 22:46:29,758 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2023-11-06 22:46:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 661 events. 356/661 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2741 event pairs, 155 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1576. Up to 371 conditions per place. [2023-11-06 22:46:29,763 INFO L140 encePairwiseOnDemand]: 483/487 looper letters, 55 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-06 22:46:29,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 317 flow [2023-11-06 22:46:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2023-11-06 22:46:29,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798083504449008 [2023-11-06 22:46:29,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2023-11-06 22:46:29,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2023-11-06 22:46:29,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:29,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2023-11-06 22:46:29,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 22:46:29,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:29,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:29,774 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 148 flow. Second operand 3 states and 701 transitions. [2023-11-06 22:46:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 317 flow [2023-11-06 22:46:29,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:29,778 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 161 flow [2023-11-06 22:46:29,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-06 22:46:29,778 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-06 22:46:29,779 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 161 flow [2023-11-06 22:46:29,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 22:46:29,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:29,780 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:29,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:46:29,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:29,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash 887703870, now seen corresponding path program 1 times [2023-11-06 22:46:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:29,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548648736] [2023-11-06 22:46:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:29,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:29,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548648736] [2023-11-06 22:46:29,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548648736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:29,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:29,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:29,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513974418] [2023-11-06 22:46:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:29,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:29,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:29,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:29,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 487 [2023-11-06 22:46:29,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 487 [2023-11-06 22:46:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:30,162 INFO L124 PetriNetUnfolderBase]: 459/854 cut-off events. [2023-11-06 22:46:30,162 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-11-06 22:46:30,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 854 events. 459/854 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3868 event pairs, 134 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 2083. Up to 611 conditions per place. [2023-11-06 22:46:30,170 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-06 22:46:30,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 356 flow [2023-11-06 22:46:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:46:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2023-11-06 22:46:30,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46560574948665295 [2023-11-06 22:46:30,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2023-11-06 22:46:30,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2023-11-06 22:46:30,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:30,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2023-11-06 22:46:30,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 22:46:30,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:30,183 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:30,184 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 161 flow. Second operand 4 states and 907 transitions. [2023-11-06 22:46:30,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 356 flow [2023-11-06 22:46:30,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:30,187 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 201 flow [2023-11-06 22:46:30,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-06 22:46:30,188 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-11-06 22:46:30,189 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 201 flow [2023-11-06 22:46:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:30,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:30,189 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:46:30,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:30,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1353208790, now seen corresponding path program 2 times [2023-11-06 22:46:30,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:30,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195164172] [2023-11-06 22:46:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:30,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:30,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:30,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195164172] [2023-11-06 22:46:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195164172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:30,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:30,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:30,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583679590] [2023-11-06 22:46:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:30,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 487 [2023-11-06 22:46:30,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:30,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:30,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 487 [2023-11-06 22:46:30,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:30,589 INFO L124 PetriNetUnfolderBase]: 467/884 cut-off events. [2023-11-06 22:46:30,589 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2023-11-06 22:46:30,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 884 events. 467/884 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4083 event pairs, 183 based on Foata normal form. 4/850 useless extension candidates. Maximal degree in co-relation 2285. Up to 431 conditions per place. [2023-11-06 22:46:30,596 INFO L140 encePairwiseOnDemand]: 481/487 looper letters, 64 selfloop transitions, 7 changer transitions 2/74 dead transitions. [2023-11-06 22:46:30,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 439 flow [2023-11-06 22:46:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:46:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:46:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1126 transitions. [2023-11-06 22:46:30,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624229979466119 [2023-11-06 22:46:30,602 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1126 transitions. [2023-11-06 22:46:30,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1126 transitions. [2023-11-06 22:46:30,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:30,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1126 transitions. [2023-11-06 22:46:30,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.2) internal successors, (1126), 5 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states 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 22:46:30,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:30,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:30,612 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 201 flow. Second operand 5 states and 1126 transitions. [2023-11-06 22:46:30,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 439 flow [2023-11-06 22:46:30,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 439 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:46:30,615 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 229 flow [2023-11-06 22:46:30,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-06 22:46:30,616 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-11-06 22:46:30,617 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 229 flow [2023-11-06 22:46:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:30,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:30,617 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:30,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:46:30,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:30,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 746682880, now seen corresponding path program 3 times [2023-11-06 22:46:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:30,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126088188] [2023-11-06 22:46:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126088188] [2023-11-06 22:46:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126088188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674824223] [2023-11-06 22:46:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:46:30,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 487 [2023-11-06 22:46:30,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:30,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:30,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 487 [2023-11-06 22:46:30,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:31,009 INFO L124 PetriNetUnfolderBase]: 447/842 cut-off events. [2023-11-06 22:46:31,009 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2023-11-06 22:46:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 842 events. 447/842 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3781 event pairs, 183 based on Foata normal form. 8/814 useless extension candidates. Maximal degree in co-relation 2258. Up to 404 conditions per place. [2023-11-06 22:46:31,019 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 61 selfloop transitions, 7 changer transitions 3/72 dead transitions. [2023-11-06 22:46:31,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 458 flow [2023-11-06 22:46:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:46:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 911 transitions. [2023-11-06 22:46:31,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46765913757700206 [2023-11-06 22:46:31,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 911 transitions. [2023-11-06 22:46:31,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 911 transitions. [2023-11-06 22:46:31,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:31,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 911 transitions. [2023-11-06 22:46:31,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.75) internal successors, (911), 4 states have internal predecessors, (911), 0 states have call successors, (0), 0 states 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 22:46:31,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:31,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 487.0) internal successors, (2435), 5 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states 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 22:46:31,038 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 229 flow. Second operand 4 states and 911 transitions. [2023-11-06 22:46:31,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 458 flow [2023-11-06 22:46:31,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 444 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 22:46:31,044 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 244 flow [2023-11-06 22:46:31,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-06 22:46:31,045 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-11-06 22:46:31,045 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 244 flow [2023-11-06 22:46:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 22:46:31,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:31,046 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:31,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:46:31,047 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:31,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1515859481, now seen corresponding path program 1 times [2023-11-06 22:46:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912970224] [2023-11-06 22:46:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912970224] [2023-11-06 22:46:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912970224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:31,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104548484] [2023-11-06 22:46:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:31,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:31,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 487 [2023-11-06 22:46:31,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 22:46:31,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:31,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 487 [2023-11-06 22:46:31,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:31,347 INFO L124 PetriNetUnfolderBase]: 427/804 cut-off events. [2023-11-06 22:46:31,347 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2023-11-06 22:46:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 804 events. 427/804 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3658 event pairs, 140 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 2171. Up to 747 conditions per place. [2023-11-06 22:46:31,354 INFO L140 encePairwiseOnDemand]: 485/487 looper letters, 48 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-06 22:46:31,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 356 flow [2023-11-06 22:46:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-11-06 22:46:31,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702258726899384 [2023-11-06 22:46:31,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-11-06 22:46:31,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-11-06 22:46:31,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:31,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-11-06 22:46:31,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 22:46:31,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:31,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:31,365 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 244 flow. Second operand 3 states and 687 transitions. [2023-11-06 22:46:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 356 flow [2023-11-06 22:46:31,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 344 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:46:31,368 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 230 flow [2023-11-06 22:46:31,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-06 22:46:31,370 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-11-06 22:46:31,370 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 230 flow [2023-11-06 22:46:31,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 22:46:31,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:31,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:31,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:46:31,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:31,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1515859480, now seen corresponding path program 1 times [2023-11-06 22:46:31,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:31,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891148128] [2023-11-06 22:46:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:31,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:46:31,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:31,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891148128] [2023-11-06 22:46:31,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891148128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:31,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:31,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:31,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325099099] [2023-11-06 22:46:31,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:31,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 487 [2023-11-06 22:46:31,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 22:46:31,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:31,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 487 [2023-11-06 22:46:31,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:31,702 INFO L124 PetriNetUnfolderBase]: 425/816 cut-off events. [2023-11-06 22:46:31,702 INFO L125 PetriNetUnfolderBase]: For 616/616 co-relation queries the response was YES. [2023-11-06 22:46:31,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 816 events. 425/816 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3691 event pairs, 102 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 2159. Up to 657 conditions per place. [2023-11-06 22:46:31,709 INFO L140 encePairwiseOnDemand]: 483/487 looper letters, 50 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-06 22:46:31,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 378 flow [2023-11-06 22:46:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-11-06 22:46:31,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47159479808350446 [2023-11-06 22:46:31,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-11-06 22:46:31,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-11-06 22:46:31,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:31,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-11-06 22:46:31,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 22:46:31,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:31,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 487.0) internal successors, (1948), 4 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states 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 22:46:31,722 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 230 flow. Second operand 3 states and 689 transitions. [2023-11-06 22:46:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 378 flow [2023-11-06 22:46:31,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:31,726 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 248 flow [2023-11-06 22:46:31,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-06 22:46:31,728 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-06 22:46:31,728 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 248 flow [2023-11-06 22:46:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 22:46:31,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:31,729 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:46:31,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:31,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1410100364, now seen corresponding path program 1 times [2023-11-06 22:46:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928859981] [2023-11-06 22:46:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928859981] [2023-11-06 22:46:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928859981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:31,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890137039] [2023-11-06 22:46:31,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:31,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:46:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:46:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:32,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 487 [2023-11-06 22:46:32,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 22:46:32,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:32,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 487 [2023-11-06 22:46:32,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:32,309 INFO L124 PetriNetUnfolderBase]: 485/914 cut-off events. [2023-11-06 22:46:32,310 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2023-11-06 22:46:32,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 914 events. 485/914 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4285 event pairs, 106 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 2521. Up to 665 conditions per place. [2023-11-06 22:46:32,317 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 58 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-11-06 22:46:32,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 475 flow [2023-11-06 22:46:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:46:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:46:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2023-11-06 22:46:32,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505133470225873 [2023-11-06 22:46:32,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2023-11-06 22:46:32,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2023-11-06 22:46:32,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:32,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2023-11-06 22:46:32,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states 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 22:46:32,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:32,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:32,333 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 248 flow. Second operand 5 states and 1097 transitions. [2023-11-06 22:46:32,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 475 flow [2023-11-06 22:46:32,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:32,338 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 285 flow [2023-11-06 22:46:32,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-11-06 22:46:32,338 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-11-06 22:46:32,339 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 285 flow [2023-11-06 22:46:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 22:46:32,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:32,340 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:32,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:46:32,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-06 22:46:32,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 594600994, now seen corresponding path program 1 times [2023-11-06 22:46:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481250220] [2023-11-06 22:46:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:46:32,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481250220] [2023-11-06 22:46:32,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481250220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:32,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150566041] [2023-11-06 22:46:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:46:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:46:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:32,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 487 [2023-11-06 22:46:32,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 22:46:32,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:32,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 487 [2023-11-06 22:46:32,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:32,907 INFO L124 PetriNetUnfolderBase]: 485/897 cut-off events. [2023-11-06 22:46:32,907 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2023-11-06 22:46:32,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 897 events. 485/897 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4154 event pairs, 106 based on Foata normal form. 17/914 useless extension candidates. Maximal degree in co-relation 2603. Up to 653 conditions per place. [2023-11-06 22:46:32,911 INFO L140 encePairwiseOnDemand]: 482/487 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-11-06 22:46:32,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 479 flow [2023-11-06 22:46:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:46:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:46:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1095 transitions. [2023-11-06 22:46:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44969199178644764 [2023-11-06 22:46:32,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1095 transitions. [2023-11-06 22:46:32,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1095 transitions. [2023-11-06 22:46:32,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:32,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1095 transitions. [2023-11-06 22:46:32,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:32,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:32,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 487.0) internal successors, (2922), 6 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 22:46:32,926 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 285 flow. Second operand 5 states and 1095 transitions. [2023-11-06 22:46:32,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 479 flow [2023-11-06 22:46:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:32,930 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-06 22:46:32,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-06 22:46:32,931 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-11-06 22:46:32,931 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-06 22:46:32,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 22:46:32,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-06 22:46:32,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-06 22:46:32,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-06 22:46:32,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-06 22:46:32,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-06 22:46:32,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-06 22:46:32,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-06 22:46:32,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-06 22:46:32,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-06 22:46:32,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-06 22:46:32,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-06 22:46:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:46:32,938 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:32,944 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:46:32,944 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:46:32,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:32 BasicIcfg [2023-11-06 22:46:32,947 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:46:32,948 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:46:32,948 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:46:32,948 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:46:32,949 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:14" (3/4) ... [2023-11-06 22:46:32,950 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:46:32,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:46:32,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:46:32,964 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 22:46:32,964 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:46:32,965 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:46:32,965 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:46:33,045 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:46:33,047 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:46:33,047 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:46:33,048 INFO L158 Benchmark]: Toolchain (without parser) took 19383.23ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 128.1MB in the beginning and 201.7MB in the end (delta: -73.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,048 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:46:33,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.99ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 116.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.16ms. Allocated memory is still 167.8MB. Free memory was 116.3MB in the beginning and 114.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,049 INFO L158 Benchmark]: Boogie Preprocessor took 42.56ms. Allocated memory is still 167.8MB. Free memory was 114.0MB in the beginning and 112.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,050 INFO L158 Benchmark]: RCFGBuilder took 635.12ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 92.2MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,050 INFO L158 Benchmark]: TraceAbstraction took 18227.97ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 91.5MB in the beginning and 205.9MB in the end (delta: -114.4MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,051 INFO L158 Benchmark]: Witness Printer took 99.17ms. Allocated memory is still 264.2MB. Free memory was 205.9MB in the beginning and 201.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:46:33,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.99ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 116.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.16ms. Allocated memory is still 167.8MB. Free memory was 116.3MB in the beginning and 114.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.56ms. Allocated memory is still 167.8MB. Free memory was 114.0MB in the beginning and 112.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.12ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 92.2MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18227.97ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 91.5MB in the beginning and 205.9MB in the end (delta: -114.4MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. * Witness Printer took 99.17ms. Allocated memory is still 264.2MB. Free memory was 205.9MB in the beginning and 201.7MB 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: 8.0s, 202 PlacesBefore, 35 PlacesAfterwards, 213 TransitionsBefore, 34 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 8 FixpointIterations, 118 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 23 ConcurrentYvCompositions, 12 ChoiceCompositions, 251 TotalNumberOfCompositions, 5305 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4504, independent: 4424, independent conditional: 0, independent unconditional: 4424, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2491, independent: 2476, independent conditional: 0, independent unconditional: 2476, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4504, independent: 1948, independent conditional: 0, independent unconditional: 1948, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 2491, unknown conditional: 0, unknown unconditional: 2491] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: 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: 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: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 290 locations, 16 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: 18.0s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1152 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 792 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2351 IncrementalHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 64 mSDtfsCounter, 2351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred in iteration=17, InterpolantAutomatonStates: 74, 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, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 347 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 665 SizeOfPredicates, 3 NumberOfNonLiveVariables, 872 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 365/413 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:46:33,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d8f590-665a-4d0e-a0ab-5a386043dbd4/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