./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:41,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:41,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:14:41,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:41,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:41,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:41,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:41,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:41,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:41,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:41,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:41,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:41,802 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:41,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:41,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:41,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:41,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:41,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:41,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:41,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:41,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:41,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:41,808 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:14:41,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:14:41,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:41,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:41,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:41,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:41,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:41,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:41,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:41,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:41,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:41,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:41,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:41,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:14:41,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:41,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:41,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:41,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:41,816 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:41,817 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_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2023-11-12 02:14:42,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:42,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:42,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:42,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:42,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:42,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-12 02:14:45,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:45,539 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:45,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-12 02:14:45,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/data/662e7679e/ebe2d5feaaf14d4482cd2ef7231df4e3/FLAG2b86c1763 [2023-11-12 02:14:45,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/data/662e7679e/ebe2d5feaaf14d4482cd2ef7231df4e3 [2023-11-12 02:14:45,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:45,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:45,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:45,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:45,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:45,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:45,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a01759f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45, skipping insertion in model container [2023-11-12 02:14:45,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:45,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:45,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:45,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:14:45,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:45,944 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:14:45,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45 WrapperNode [2023-11-12 02:14:45,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:45,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:45,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:14:45,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:14:45,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:45,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,011 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2023-11-12 02:14:46,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:46,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:14:46,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:14:46,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:14:46,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:14:46,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:14:46,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:14:46,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:14:46,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (1/1) ... [2023-11-12 02:14:46,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:46,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:14:46,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:14:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:14:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:14:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:14:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:14:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:14:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:14:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:14:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:14:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:14:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:14:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:14:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:14:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:14:46,170 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:14:46,293 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:14:46,296 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:14:46,853 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:14:46,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:14:46,875 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:14:46,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:46 BoogieIcfgContainer [2023-11-12 02:14:46,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:14:46,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:14:46,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:14:46,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:14:46,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:14:45" (1/3) ... [2023-11-12 02:14:46,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd96454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:46, skipping insertion in model container [2023-11-12 02:14:46,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:45" (2/3) ... [2023-11-12 02:14:46,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd96454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:46, skipping insertion in model container [2023-11-12 02:14:46,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:46" (3/3) ... [2023-11-12 02:14:46,889 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-11-12 02:14:46,902 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:14:46,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:14:46,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 02:14:46,910 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:14:47,053 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:14:47,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 708 flow [2023-11-12 02:14:47,272 INFO L124 PetriNetUnfolderBase]: 23/345 cut-off events. [2023-11-12 02:14:47,272 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:14:47,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 345 events. 23/345 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 742 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 216. Up to 2 conditions per place. [2023-11-12 02:14:47,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 347 transitions, 708 flow [2023-11-12 02:14:47,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 324 transitions, 660 flow [2023-11-12 02:14:47,299 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:47,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 324 transitions, 660 flow [2023-11-12 02:14:47,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 324 transitions, 660 flow [2023-11-12 02:14:47,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 324 transitions, 660 flow [2023-11-12 02:14:47,444 INFO L124 PetriNetUnfolderBase]: 22/324 cut-off events. [2023-11-12 02:14:47,444 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:14:47,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 324 events. 22/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 745 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 216. Up to 2 conditions per place. [2023-11-12 02:14:47,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 22148 [2023-11-12 02:15:06,179 INFO L134 LiptonReduction]: Checked pairs total: 21655 [2023-11-12 02:15:06,180 INFO L136 LiptonReduction]: Total number of compositions: 420 [2023-11-12 02:15:06,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:06,201 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d2074cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:06,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-12 02:15:06,204 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:15:06,204 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-12 02:15:06,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:06,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:06,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:15:06,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:06,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash 46061, now seen corresponding path program 1 times [2023-11-12 02:15:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975342531] [2023-11-12 02:15:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:06,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975342531] [2023-11-12 02:15:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975342531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212323268] [2023-11-12 02:15:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:06,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:06,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-12 02:15:06,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:06,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-12 02:15:06,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:06,799 INFO L124 PetriNetUnfolderBase]: 226/390 cut-off events. [2023-11-12 02:15:06,800 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-12 02:15:06,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 390 events. 226/390 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1580 event pairs, 189 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 720. Up to 388 conditions per place. [2023-11-12 02:15:06,804 INFO L140 encePairwiseOnDemand]: 756/767 looper letters, 24 selfloop transitions, 2 changer transitions 1/27 dead transitions. [2023-11-12 02:15:06,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-11-12 02:15:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-11-12 02:15:06,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43415906127770537 [2023-11-12 02:15:06,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-11-12 02:15:06,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-11-12 02:15:06,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:06,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-11-12 02:15:06,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,858 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 999 transitions. [2023-11-12 02:15:06,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-11-12 02:15:06,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:06,865 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 59 flow [2023-11-12 02:15:06,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-12 02:15:06,871 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-11-12 02:15:06,871 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 59 flow [2023-11-12 02:15:06,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:06,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:15:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:06,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash 46062, now seen corresponding path program 1 times [2023-11-12 02:15:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372369213] [2023-11-12 02:15:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372369213] [2023-11-12 02:15:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372369213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144710466] [2023-11-12 02:15:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:06,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-12 02:15:06,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:06,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-12 02:15:06,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:07,108 INFO L124 PetriNetUnfolderBase]: 227/391 cut-off events. [2023-11-12 02:15:07,109 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:15:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 391 events. 227/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1580 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 779. Up to 391 conditions per place. [2023-11-12 02:15:07,113 INFO L140 encePairwiseOnDemand]: 763/767 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-12 02:15:07,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 121 flow [2023-11-12 02:15:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-11-12 02:15:07,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311169056931769 [2023-11-12 02:15:07,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-11-12 02:15:07,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-11-12 02:15:07,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:07,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-11-12 02:15:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,133 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 992 transitions. [2023-11-12 02:15:07,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 121 flow [2023-11-12 02:15:07,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:07,135 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 74 flow [2023-11-12 02:15:07,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-11-12 02:15:07,136 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-11-12 02:15:07,137 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 74 flow [2023-11-12 02:15:07,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:07,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:15:07,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:07,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1429189, now seen corresponding path program 1 times [2023-11-12 02:15:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627185951] [2023-11-12 02:15:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:07,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627185951] [2023-11-12 02:15:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627185951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141628627] [2023-11-12 02:15:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:07,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:07,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:15:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:07,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:07,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:07,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:07,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141628627] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:07,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:07,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:15:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515739824] [2023-11-12 02:15:07,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:15:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:15:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:07,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 767 [2023-11-12 02:15:07,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:07,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 767 [2023-11-12 02:15:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:07,710 INFO L124 PetriNetUnfolderBase]: 230/397 cut-off events. [2023-11-12 02:15:07,710 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:15:07,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 397 events. 230/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1591 event pairs, 189 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 779. Up to 394 conditions per place. [2023-11-12 02:15:07,714 INFO L140 encePairwiseOnDemand]: 763/767 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-11-12 02:15:07,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 166 flow [2023-11-12 02:15:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:15:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1963 transitions. [2023-11-12 02:15:07,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265536723163842 [2023-11-12 02:15:07,723 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1963 transitions. [2023-11-12 02:15:07,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1963 transitions. [2023-11-12 02:15:07,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:07,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1963 transitions. [2023-11-12 02:15:07,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.1666666666667) internal successors, (1963), 6 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,748 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,749 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 74 flow. Second operand 6 states and 1963 transitions. [2023-11-12 02:15:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 166 flow [2023-11-12 02:15:07,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 161 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:07,752 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 130 flow [2023-11-12 02:15:07,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-12 02:15:07,754 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-12 02:15:07,755 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 130 flow [2023-11-12 02:15:07,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:07,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:07,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:15:07,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:07,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:07,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1373490847, now seen corresponding path program 1 times [2023-11-12 02:15:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765321776] [2023-11-12 02:15:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765321776] [2023-11-12 02:15:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765321776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:08,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:08,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188158311] [2023-11-12 02:15:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:08,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:08,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-12 02:15:08,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:08,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-12 02:15:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:08,333 INFO L124 PetriNetUnfolderBase]: 298/517 cut-off events. [2023-11-12 02:15:08,333 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:15:08,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 517 events. 298/517 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2378 event pairs, 189 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 1047. Up to 398 conditions per place. [2023-11-12 02:15:08,340 INFO L140 encePairwiseOnDemand]: 760/767 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-12 02:15:08,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 260 flow [2023-11-12 02:15:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-11-12 02:15:08,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398087787918296 [2023-11-12 02:15:08,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-11-12 02:15:08,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-11-12 02:15:08,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:08,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-11-12 02:15:08,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,361 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 130 flow. Second operand 3 states and 1012 transitions. [2023-11-12 02:15:08,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 260 flow [2023-11-12 02:15:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 239 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:08,365 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 129 flow [2023-11-12 02:15:08,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-11-12 02:15:08,368 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-12 02:15:08,368 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 129 flow [2023-11-12 02:15:08,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:08,370 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:15:08,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:08,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:08,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -371445330, now seen corresponding path program 2 times [2023-11-12 02:15:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927964051] [2023-11-12 02:15:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927964051] [2023-11-12 02:15:08,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927964051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296842242] [2023-11-12 02:15:08,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:08,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:08,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:08,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:08,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:15:08,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:15:08,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:08,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:08,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:15:08,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296842242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:08,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:15:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:15:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018493667] [2023-11-12 02:15:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:08,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:08,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 767 [2023-11-12 02:15:08,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:08,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 767 [2023-11-12 02:15:08,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:08,882 INFO L124 PetriNetUnfolderBase]: 298/516 cut-off events. [2023-11-12 02:15:08,892 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-12 02:15:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 516 events. 298/516 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2188 event pairs, 251 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 1204. Up to 511 conditions per place. [2023-11-12 02:15:08,897 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-11-12 02:15:08,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 187 flow [2023-11-12 02:15:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-12 02:15:08,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324206866579748 [2023-11-12 02:15:08,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-12 02:15:08,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-12 02:15:08,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:08,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-12 02:15:08,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,930 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 129 flow. Second operand 3 states and 995 transitions. [2023-11-12 02:15:08,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 187 flow [2023-11-12 02:15:08,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 169 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:08,932 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 113 flow [2023-11-12 02:15:08,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-11-12 02:15:08,934 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-12 02:15:08,934 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 113 flow [2023-11-12 02:15:08,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:08,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:15:08,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:09,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:09,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:09,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash -371456575, now seen corresponding path program 1 times [2023-11-12 02:15:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:09,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425913095] [2023-11-12 02:15:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:09,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425913095] [2023-11-12 02:15:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425913095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:09,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:09,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:09,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57133994] [2023-11-12 02:15:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:09,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:09,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-12 02:15:09,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:09,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-12 02:15:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:09,367 INFO L124 PetriNetUnfolderBase]: 272/472 cut-off events. [2023-11-12 02:15:09,367 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-12 02:15:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 472 events. 272/472 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1951 event pairs, 227 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 1058. Up to 472 conditions per place. [2023-11-12 02:15:09,371 INFO L140 encePairwiseOnDemand]: 765/767 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-12 02:15:09,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 175 flow [2023-11-12 02:15:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2023-11-12 02:15:09,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43068231203824425 [2023-11-12 02:15:09,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2023-11-12 02:15:09,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2023-11-12 02:15:09,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:09,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2023-11-12 02:15:09,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,386 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 113 flow. Second operand 3 states and 991 transitions. [2023-11-12 02:15:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 175 flow [2023-11-12 02:15:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:09,388 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-11-12 02:15:09,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-12 02:15:09,389 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2023-11-12 02:15:09,390 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-11-12 02:15:09,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:15:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:15:09,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:09,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -371456580, now seen corresponding path program 1 times [2023-11-12 02:15:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218685998] [2023-11-12 02:15:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218685998] [2023-11-12 02:15:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218685998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955324238] [2023-11-12 02:15:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:09,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:09,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:09,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:15:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:09,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:09,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:09,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:09,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955324238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:09,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:15:09,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:15:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164077023] [2023-11-12 02:15:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:09,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:09,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 767 [2023-11-12 02:15:09,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:09,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 767 [2023-11-12 02:15:09,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:09,756 INFO L124 PetriNetUnfolderBase]: 271/471 cut-off events. [2023-11-12 02:15:09,756 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-12 02:15:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 471 events. 271/471 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1942 event pairs, 227 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 1081. Up to 471 conditions per place. [2023-11-12 02:15:09,760 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 30 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-12 02:15:09,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 159 flow [2023-11-12 02:15:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2023-11-12 02:15:09,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285093437635811 [2023-11-12 02:15:09,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2023-11-12 02:15:09,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2023-11-12 02:15:09,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:09,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2023-11-12 02:15:09,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,776 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 3 states and 986 transitions. [2023-11-12 02:15:09,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 159 flow [2023-11-12 02:15:09,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:09,778 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 98 flow [2023-11-12 02:15:09,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-12 02:15:09,779 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-12 02:15:09,779 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 98 flow [2023-11-12 02:15:09,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:09,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:09,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:15:09,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:09,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1370086717, now seen corresponding path program 1 times [2023-11-12 02:15:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715082480] [2023-11-12 02:15:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715082480] [2023-11-12 02:15:10,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715082480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158313455] [2023-11-12 02:15:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:10,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:10,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:10,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:15:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:10,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:10,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:10,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158313455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:10,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:10,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-12 02:15:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128672966] [2023-11-12 02:15:10,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:10,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:15:10,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:15:10,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:15:10,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 767 [2023-11-12 02:15:10,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 316.125) internal successors, (2529), 8 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:10,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 767 [2023-11-12 02:15:10,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:10,680 INFO L124 PetriNetUnfolderBase]: 337/589 cut-off events. [2023-11-12 02:15:10,680 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:15:10,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 589 events. 337/589 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2753 event pairs, 165 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 1336. Up to 347 conditions per place. [2023-11-12 02:15:10,685 INFO L140 encePairwiseOnDemand]: 758/767 looper letters, 52 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-12 02:15:10,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 272 flow [2023-11-12 02:15:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:15:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-11-12 02:15:10,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211212516297262 [2023-11-12 02:15:10,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-11-12 02:15:10,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-11-12 02:15:10,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:10,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-11-12 02:15:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 767.0) internal successors, (6136), 8 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,726 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 767.0) internal successors, (6136), 8 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,734 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 98 flow. Second operand 7 states and 2261 transitions. [2023-11-12 02:15:10,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 272 flow [2023-11-12 02:15:10,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:10,737 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 116 flow [2023-11-12 02:15:10,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-12 02:15:10,738 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-11-12 02:15:10,738 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 116 flow [2023-11-12 02:15:10,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 316.125) internal successors, (2529), 8 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-12 02:15:10,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:15:10,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1513979399, now seen corresponding path program 2 times [2023-11-12 02:15:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706567604] [2023-11-12 02:15:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706567604] [2023-11-12 02:15:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706567604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76089321] [2023-11-12 02:15:11,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:11,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:11,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:11,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:11,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:15:11,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:15:11,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:15:11,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:11,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:15:11,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76089321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:15:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-12 02:15:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988437057] [2023-11-12 02:15:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:11,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-12 02:15:11,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:11,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-12 02:15:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:11,376 INFO L124 PetriNetUnfolderBase]: 275/483 cut-off events. [2023-11-12 02:15:11,376 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-11-12 02:15:11,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 483 events. 275/483 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2001 event pairs, 231 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 1221. Up to 483 conditions per place. [2023-11-12 02:15:11,381 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-12 02:15:11,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 166 flow [2023-11-12 02:15:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-11-12 02:15:11,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43285528031290743 [2023-11-12 02:15:11,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-11-12 02:15:11,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-11-12 02:15:11,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:11,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-11-12 02:15:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,395 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 116 flow. Second operand 3 states and 996 transitions. [2023-11-12 02:15:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 166 flow [2023-11-12 02:15:11,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 152 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:11,397 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 96 flow [2023-11-12 02:15:11,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-12 02:15:11,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-12 02:15:11,398 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 96 flow [2023-11-12 02:15:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:11,399 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-12 02:15:11,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:11,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:11,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:11,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1513979398, now seen corresponding path program 1 times [2023-11-12 02:15:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:11,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194139347] [2023-11-12 02:15:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194139347] [2023-11-12 02:15:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194139347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:15:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146641047] [2023-11-12 02:15:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:11,772 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:11,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:15:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:11,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:15:11,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:11,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:15:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:12,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146641047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:15:12,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:15:12,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-12 02:15:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098624390] [2023-11-12 02:15:12,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:15:12,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:12,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-12 02:15:12,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:12,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-12 02:15:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:12,327 INFO L124 PetriNetUnfolderBase]: 335/589 cut-off events. [2023-11-12 02:15:12,327 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-12 02:15:12,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 589 events. 335/589 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2716 event pairs, 123 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 1416. Up to 272 conditions per place. [2023-11-12 02:15:12,332 INFO L140 encePairwiseOnDemand]: 762/767 looper letters, 65 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-12 02:15:12,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 69 transitions, 324 flow [2023-11-12 02:15:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:15:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1677 transitions. [2023-11-12 02:15:12,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43728813559322033 [2023-11-12 02:15:12,339 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1677 transitions. [2023-11-12 02:15:12,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1677 transitions. [2023-11-12 02:15:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1677 transitions. [2023-11-12 02:15:12,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 767.0) internal successors, (4602), 6 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 767.0) internal successors, (4602), 6 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,354 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 96 flow. Second operand 5 states and 1677 transitions. [2023-11-12 02:15:12,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 69 transitions, 324 flow [2023-11-12 02:15:12,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:12,357 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 119 flow [2023-11-12 02:15:12,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-12 02:15:12,358 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-12 02:15:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 119 flow [2023-11-12 02:15:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:12,360 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:12,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:12,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:12,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1514806569, now seen corresponding path program 1 times [2023-11-12 02:15:12,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662627702] [2023-11-12 02:15:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:12,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:12,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662627702] [2023-11-12 02:15:12,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662627702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:12,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:12,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234326643] [2023-11-12 02:15:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:12,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-12 02:15:12,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:12,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-12 02:15:12,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:12,864 INFO L124 PetriNetUnfolderBase]: 423/741 cut-off events. [2023-11-12 02:15:12,864 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-11-12 02:15:12,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 741 events. 423/741 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3443 event pairs, 285 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 1956. Up to 590 conditions per place. [2023-11-12 02:15:12,870 INFO L140 encePairwiseOnDemand]: 761/767 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-12 02:15:12,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 282 flow [2023-11-12 02:15:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-11-12 02:15:12,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-11-12 02:15:12,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-11-12 02:15:12,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-11-12 02:15:12,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:12,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-11-12 02:15:12,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,886 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 119 flow. Second operand 3 states and 1003 transitions. [2023-11-12 02:15:12,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 282 flow [2023-11-12 02:15:12,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 262 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-12 02:15:12,888 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 127 flow [2023-11-12 02:15:12,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-12 02:15:12,889 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-12 02:15:12,889 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 127 flow [2023-11-12 02:15:12,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:12,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:12,890 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:15:12,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:15:12,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:12,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash -311278692, now seen corresponding path program 2 times [2023-11-12 02:15:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113468360] [2023-11-12 02:15:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:15:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113468360] [2023-11-12 02:15:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113468360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:13,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493881996] [2023-11-12 02:15:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:13,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-12 02:15:13,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:13,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-12 02:15:13,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:13,229 INFO L124 PetriNetUnfolderBase]: 353/621 cut-off events. [2023-11-12 02:15:13,230 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-11-12 02:15:13,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 621 events. 353/621 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2657 event pairs, 303 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 1735. Up to 621 conditions per place. [2023-11-12 02:15:13,235 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-12 02:15:13,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 173 flow [2023-11-12 02:15:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-11-12 02:15:13,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43198609300304214 [2023-11-12 02:15:13,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-11-12 02:15:13,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-11-12 02:15:13,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:13,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-11-12 02:15:13,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,250 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 127 flow. Second operand 3 states and 994 transitions. [2023-11-12 02:15:13,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 173 flow [2023-11-12 02:15:13,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:13,253 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 115 flow [2023-11-12 02:15:13,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-12 02:15:13,253 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-11-12 02:15:13,254 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 115 flow [2023-11-12 02:15:13,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:13,254 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:15:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:15:13,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:13,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash -311278690, now seen corresponding path program 1 times [2023-11-12 02:15:13,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212914271] [2023-11-12 02:15:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:15:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212914271] [2023-11-12 02:15:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212914271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:13,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:13,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99784336] [2023-11-12 02:15:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:13,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:13,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-12 02:15:13,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:13,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-12 02:15:13,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:13,521 INFO L124 PetriNetUnfolderBase]: 289/511 cut-off events. [2023-11-12 02:15:13,522 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-11-12 02:15:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 511 events. 289/511 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2041 event pairs, 243 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 1366. Up to 511 conditions per place. [2023-11-12 02:15:13,526 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-12 02:15:13,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 157 flow [2023-11-12 02:15:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-11-12 02:15:13,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311169056931769 [2023-11-12 02:15:13,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-11-12 02:15:13,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-11-12 02:15:13,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:13,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-11-12 02:15:13,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,541 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 115 flow. Second operand 3 states and 992 transitions. [2023-11-12 02:15:13,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 157 flow [2023-11-12 02:15:13,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:13,542 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 104 flow [2023-11-12 02:15:13,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-12 02:15:13,544 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-12 02:15:13,544 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 104 flow [2023-11-12 02:15:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:13,545 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:15:13,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:15:13,545 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:13,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -311278733, now seen corresponding path program 1 times [2023-11-12 02:15:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:13,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271782094] [2023-11-12 02:15:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:15:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271782094] [2023-11-12 02:15:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271782094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:13,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:13,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859544848] [2023-11-12 02:15:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:13,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 767 [2023-11-12 02:15:13,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:13,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 767 [2023-11-12 02:15:13,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:13,783 INFO L124 PetriNetUnfolderBase]: 231/411 cut-off events. [2023-11-12 02:15:13,783 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-11-12 02:15:13,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 411 events. 231/411 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1542 event pairs, 189 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 1063. Up to 411 conditions per place. [2023-11-12 02:15:13,786 INFO L140 encePairwiseOnDemand]: 764/767 looper letters, 23 selfloop transitions, 1 changer transitions 1/25 dead transitions. [2023-11-12 02:15:13,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 142 flow [2023-11-12 02:15:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-12 02:15:13,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302477183833116 [2023-11-12 02:15:13,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-12 02:15:13,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-12 02:15:13,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:13,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-12 02:15:13,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,800 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 104 flow. Second operand 3 states and 990 transitions. [2023-11-12 02:15:13,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 142 flow [2023-11-12 02:15:13,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:13,804 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 91 flow [2023-11-12 02:15:13,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-12 02:15:13,805 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-11-12 02:15:13,805 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 91 flow [2023-11-12 02:15:13,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:13,806 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:15:13,807 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-12 02:15:13,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -285635822, now seen corresponding path program 1 times [2023-11-12 02:15:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315867552] [2023-11-12 02:15:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:13,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:15:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315867552] [2023-11-12 02:15:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315867552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091848570] [2023-11-12 02:15:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:13,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 767 [2023-11-12 02:15:13,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:13,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 767 [2023-11-12 02:15:13,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:13,991 INFO L124 PetriNetUnfolderBase]: 126/228 cut-off events. [2023-11-12 02:15:13,992 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-12 02:15:13,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 228 events. 126/228 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 90 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 617. Up to 228 conditions per place. [2023-11-12 02:15:13,993 INFO L140 encePairwiseOnDemand]: 765/767 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-11-12 02:15:13,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 133 flow [2023-11-12 02:15:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-11-12 02:15:13,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42633637548891784 [2023-11-12 02:15:13,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-11-12 02:15:13,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-11-12 02:15:13,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:14,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-11-12 02:15:14,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,010 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 91 flow. Second operand 3 states and 981 transitions. [2023-11-12 02:15:14,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 133 flow [2023-11-12 02:15:14,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 130 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:14,011 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-12 02:15:14,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-12 02:15:14,012 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-12 02:15:14,012 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-12 02:15:14,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2023-11-12 02:15:14,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2023-11-12 02:15:14,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2023-11-12 02:15:14,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2023-11-12 02:15:14,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2023-11-12 02:15:14,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2023-11-12 02:15:14,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2023-11-12 02:15:14,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2023-11-12 02:15:14,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2023-11-12 02:15:14,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2023-11-12 02:15:14,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2023-11-12 02:15:14,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2023-11-12 02:15:14,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2023-11-12 02:15:14,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2023-11-12 02:15:14,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2023-11-12 02:15:14,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2023-11-12 02:15:14,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2023-11-12 02:15:14,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2023-11-12 02:15:14,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:15:14,023 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:14,029 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:15:14,029 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:15:14,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:15:14 BasicIcfg [2023-11-12 02:15:14,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:15:14,034 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:15:14,034 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:15:14,034 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:15:14,035 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:46" (3/4) ... [2023-11-12 02:15:14,037 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:15:14,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:15:14,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:15:14,047 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-12 02:15:14,048 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:15:14,048 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:15:14,049 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:15:14,138 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:15:14,138 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:15:14,139 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:15:14,139 INFO L158 Benchmark]: Toolchain (without parser) took 28549.03ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 111.7MB in the beginning and 233.5MB in the end (delta: -121.8MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,140 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:15:14,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.78ms. Allocated memory is still 148.9MB. Free memory was 111.7MB in the beginning and 99.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.20ms. Allocated memory is still 148.9MB. Free memory was 99.1MB in the beginning and 96.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,141 INFO L158 Benchmark]: Boogie Preprocessor took 56.41ms. Allocated memory is still 148.9MB. Free memory was 96.5MB in the beginning and 94.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:15:14,141 INFO L158 Benchmark]: RCFGBuilder took 810.21ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 108.1MB in the end (delta: -13.7MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,142 INFO L158 Benchmark]: TraceAbstraction took 27151.44ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 107.4MB in the beginning and 238.7MB in the end (delta: -131.3MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,142 INFO L158 Benchmark]: Witness Printer took 104.54ms. Allocated memory is still 314.6MB. Free memory was 238.7MB in the beginning and 233.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:15:14,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.78ms. Allocated memory is still 148.9MB. Free memory was 111.7MB in the beginning and 99.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.20ms. Allocated memory is still 148.9MB. Free memory was 99.1MB in the beginning and 96.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.41ms. Allocated memory is still 148.9MB. Free memory was 96.5MB in the beginning and 94.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 810.21ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 108.1MB in the end (delta: -13.7MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * TraceAbstraction took 27151.44ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 107.4MB in the beginning and 238.7MB in the end (delta: -131.3MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 104.54ms. Allocated memory is still 314.6MB. Free memory was 238.7MB in the beginning and 233.5MB in the end (delta: 5.2MB). 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: 18.9s, 309 PlacesBefore, 40 PlacesAfterwards, 324 TransitionsBefore, 36 TransitionsAfterwards, 22148 CoEnabledTransitionPairs, 9 FixpointIterations, 111 TrivialSequentialCompositions, 222 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 56 ConcurrentYvCompositions, 19 ChoiceCompositions, 420 TotalNumberOfCompositions, 21655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21368, independent: 21354, independent conditional: 0, independent unconditional: 21354, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13133, independent: 13128, independent conditional: 0, independent unconditional: 13128, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21368, independent: 8226, independent conditional: 0, independent unconditional: 8226, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 13133, unknown conditional: 0, unknown unconditional: 13133] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 507 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.9s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 608 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1183 IncrementalHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 72 mSDtfsCounter, 1183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 5 NumberOfNonLiveVariables, 772 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 104/126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:15:14,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7823b6-894c-4499-b9af-f5ab5311c461/bin/uautomizer-verify-uTZkv6EMXl/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