./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/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_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/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_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:46,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:47,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:19:47,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:47,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:47,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:47,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:47,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:47,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:47,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:47,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:47,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:47,207 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:47,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:47,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:19:47,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:47,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:47,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:47,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:47,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:19:47,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:47,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:19:47,213 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:19:47,215 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:19:47,216 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:47,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:19:47,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:47,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:47,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:47,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:47,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:47,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:47,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:47,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:19:47,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:19:47,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:19:47,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:47,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:19:47,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:47,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:47,224 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:47,224 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_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-12 02:19:47,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:19:47,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:19:47,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:19:47,566 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:19:47,567 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:19:47,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-12 02:19:51,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:51,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:51,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-12 02:19:51,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/data/9fdecf1b1/e5a0074984844e248b02bac2d9680ee4/FLAG6eac8ec81 [2023-11-12 02:19:51,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/data/9fdecf1b1/e5a0074984844e248b02bac2d9680ee4 [2023-11-12 02:19:51,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:51,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:51,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:51,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:51,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:51,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c2cf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51, skipping insertion in model container [2023-11-12 02:19:51,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:51,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:51,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:51,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:51,701 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:51,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51 WrapperNode [2023-11-12 02:19:51,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:51,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:51,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:51,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:51,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,756 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 193 [2023-11-12 02:19:51,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:51,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:51,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:51,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:51,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:51,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:51,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:51,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:51,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:51,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:51,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:19:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:19:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:19:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:19:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:19:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:19:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:19:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:19:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:19:51,906 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 02:19:52,082 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:52,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:52,497 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:52,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:52,510 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:19:52,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:52 BoogieIcfgContainer [2023-11-12 02:19:52,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:52,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:52,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:52,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:52,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:51" (1/3) ... [2023-11-12 02:19:52,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4914b95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:52, skipping insertion in model container [2023-11-12 02:19:52,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51" (2/3) ... [2023-11-12 02:19:52,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4914b95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:52, skipping insertion in model container [2023-11-12 02:19:52,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:52" (3/3) ... [2023-11-12 02:19:52,524 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-12 02:19:52,533 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:19:52,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:52,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 02:19:52,573 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:19:52,678 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:19:52,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 238 transitions, 490 flow [2023-11-12 02:19:52,846 INFO L124 PetriNetUnfolderBase]: 19/236 cut-off events. [2023-11-12 02:19:52,848 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:52,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 236 events. 19/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2023-11-12 02:19:52,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 238 transitions, 490 flow [2023-11-12 02:19:52,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 215 transitions, 442 flow [2023-11-12 02:19:52,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:52,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 215 transitions, 442 flow [2023-11-12 02:19:52,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 215 transitions, 442 flow [2023-11-12 02:19:52,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 215 transitions, 442 flow [2023-11-12 02:19:52,970 INFO L124 PetriNetUnfolderBase]: 18/215 cut-off events. [2023-11-12 02:19:52,970 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:52,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 18/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 264 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2023-11-12 02:19:52,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 4400 [2023-11-12 02:20:01,397 INFO L134 LiptonReduction]: Checked pairs total: 5317 [2023-11-12 02:20:01,398 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-11-12 02:20:01,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:01,430 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;@4f6c56fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:01,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:20:01,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:01,434 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:20:01,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:01,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:01,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:20:01,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:01,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 29158, now seen corresponding path program 1 times [2023-11-12 02:20:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153344587] [2023-11-12 02:20:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:01,766 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 02:20:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153344587] [2023-11-12 02:20:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153344587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:01,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773303617] [2023-11-12 02:20:01,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:01,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:01,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 481 [2023-11-12 02:20:01,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 02:20:01,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:01,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 481 [2023-11-12 02:20:01,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:02,055 INFO L124 PetriNetUnfolderBase]: 145/251 cut-off events. [2023-11-12 02:20:02,055 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:20:02,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 251 events. 145/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 768 event pairs, 93 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 446. Up to 243 conditions per place. [2023-11-12 02:20:02,065 INFO L140 encePairwiseOnDemand]: 471/481 looper letters, 31 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2023-11-12 02:20:02,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 158 flow [2023-11-12 02:20:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-11-12 02:20:02,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46916146916146917 [2023-11-12 02:20:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-11-12 02:20:02,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-11-12 02:20:02,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:02,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-11-12 02:20:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 02:20:02,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:02,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:02,130 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 677 transitions. [2023-11-12 02:20:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 158 flow [2023-11-12 02:20:02,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:02,137 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 114 flow [2023-11-12 02:20:02,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-11-12 02:20:02,150 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-12 02:20:02,150 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 114 flow [2023-11-12 02:20:02,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 02:20:02,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:02,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:20:02,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:02,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:02,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash 905841, now seen corresponding path program 1 times [2023-11-12 02:20:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:02,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297642388] [2023-11-12 02:20:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:02,332 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 02:20:02,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:02,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297642388] [2023-11-12 02:20:02,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297642388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739100288] [2023-11-12 02:20:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:02,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:02,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:20:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:02,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:02,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:02,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:02,516 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 02:20:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739100288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:02,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:02,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:20:02,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534153385] [2023-11-12 02:20:02,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:20:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:20:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:02,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 481 [2023-11-12 02:20:02,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 213.14285714285714) internal successors, (1492), 7 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states 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 02:20:02,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:02,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 481 [2023-11-12 02:20:02,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:02,833 INFO L124 PetriNetUnfolderBase]: 157/269 cut-off events. [2023-11-12 02:20:02,833 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:20:02,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 269 events. 157/269 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 819 event pairs, 93 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 479. Up to 244 conditions per place. [2023-11-12 02:20:02,836 INFO L140 encePairwiseOnDemand]: 472/481 looper letters, 29 selfloop transitions, 25 changer transitions 0/55 dead transitions. [2023-11-12 02:20:02,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 300 flow [2023-11-12 02:20:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:20:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:20:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1544 transitions. [2023-11-12 02:20:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45856845856845857 [2023-11-12 02:20:02,850 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1544 transitions. [2023-11-12 02:20:02,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1544 transitions. [2023-11-12 02:20:02,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:02,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1544 transitions. [2023-11-12 02:20:02,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 220.57142857142858) internal successors, (1544), 7 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 02:20:02,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 02:20:02,879 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 02:20:02,879 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 114 flow. Second operand 7 states and 1544 transitions. [2023-11-12 02:20:02,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 300 flow [2023-11-12 02:20:02,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:02,884 INFO L231 Difference]: Finished difference. Result has 41 places, 55 transitions, 268 flow [2023-11-12 02:20:02,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=41, PETRI_TRANSITIONS=55} [2023-11-12 02:20:02,885 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-12 02:20:02,886 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 55 transitions, 268 flow [2023-11-12 02:20:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 213.14285714285714) internal successors, (1492), 7 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states 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 02:20:02,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:02,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-12 02:20:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:03,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 28081926, now seen corresponding path program 1 times [2023-11-12 02:20:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77629786] [2023-11-12 02:20:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:03,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:03,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77629786] [2023-11-12 02:20:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77629786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:03,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629014286] [2023-11-12 02:20:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:03,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 481 [2023-11-12 02:20:03,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 55 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 02:20:03,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:03,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 481 [2023-11-12 02:20:03,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:03,357 INFO L124 PetriNetUnfolderBase]: 151/261 cut-off events. [2023-11-12 02:20:03,357 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 02:20:03,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 261 events. 151/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 796 event pairs, 93 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 528. Up to 238 conditions per place. [2023-11-12 02:20:03,362 INFO L140 encePairwiseOnDemand]: 477/481 looper letters, 40 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-12 02:20:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 306 flow [2023-11-12 02:20:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-11-12 02:20:03,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46292446292446293 [2023-11-12 02:20:03,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-11-12 02:20:03,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-11-12 02:20:03,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:03,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-11-12 02:20:03,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 02:20:03,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:03,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:03,377 INFO L175 Difference]: Start difference. First operand has 41 places, 55 transitions, 268 flow. Second operand 3 states and 668 transitions. [2023-11-12 02:20:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 306 flow [2023-11-12 02:20:03,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 280 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:03,385 INFO L231 Difference]: Finished difference. Result has 39 places, 47 transitions, 200 flow [2023-11-12 02:20:03,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=39, PETRI_TRANSITIONS=47} [2023-11-12 02:20:03,387 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-12 02:20:03,388 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 200 flow [2023-11-12 02:20:03,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 02:20:03,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:03,389 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:20:03,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:03,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:03,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1216988232, now seen corresponding path program 2 times [2023-11-12 02:20:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322397151] [2023-11-12 02:20:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322397151] [2023-11-12 02:20:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322397151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208419466] [2023-11-12 02:20:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:03,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:03,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:03,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:20:03,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:20:03,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:03,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:03,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:03,729 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 02:20:03,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208419466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:03,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:03,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:20:03,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367131421] [2023-11-12 02:20:03,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:03,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:03,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:03,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 481 [2023-11-12 02:20:03,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 02:20:03,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:03,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 481 [2023-11-12 02:20:03,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:03,868 INFO L124 PetriNetUnfolderBase]: 151/259 cut-off events. [2023-11-12 02:20:03,868 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-12 02:20:03,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 259 events. 151/259 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 792 event pairs, 93 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 525. Up to 238 conditions per place. [2023-11-12 02:20:03,871 INFO L140 encePairwiseOnDemand]: 477/481 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-11-12 02:20:03,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 268 flow [2023-11-12 02:20:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-11-12 02:20:03,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4698544698544699 [2023-11-12 02:20:03,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-11-12 02:20:03,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-11-12 02:20:03,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:03,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-11-12 02:20:03,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 02:20:03,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:03,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:03,884 INFO L175 Difference]: Start difference. First operand has 39 places, 47 transitions, 200 flow. Second operand 3 states and 678 transitions. [2023-11-12 02:20:03,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 268 flow [2023-11-12 02:20:03,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 224 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-12 02:20:03,887 INFO L231 Difference]: Finished difference. Result has 33 places, 45 transitions, 148 flow [2023-11-12 02:20:03,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=33, PETRI_TRANSITIONS=45} [2023-11-12 02:20:03,888 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-11-12 02:20:03,888 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 45 transitions, 148 flow [2023-11-12 02:20:03,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 02:20:03,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:03,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:03,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:04,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:04,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:04,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash -718391434, now seen corresponding path program 1 times [2023-11-12 02:20:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913112979] [2023-11-12 02:20:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:04,150 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 02:20:04,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913112979] [2023-11-12 02:20:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913112979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:04,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887294259] [2023-11-12 02:20:04,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:04,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:04,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 481 [2023-11-12 02:20:04,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 45 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 02:20:04,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:04,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 481 [2023-11-12 02:20:04,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:04,321 INFO L124 PetriNetUnfolderBase]: 211/358 cut-off events. [2023-11-12 02:20:04,321 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:20:04,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 358 events. 211/358 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1253 event pairs, 93 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 677. Up to 254 conditions per place. [2023-11-12 02:20:04,324 INFO L140 encePairwiseOnDemand]: 478/481 looper letters, 60 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-12 02:20:04,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 63 transitions, 310 flow [2023-11-12 02:20:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-11-12 02:20:04,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48995148995148996 [2023-11-12 02:20:04,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-11-12 02:20:04,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-11-12 02:20:04,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:04,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-11-12 02:20:04,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 02:20:04,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,340 INFO L175 Difference]: Start difference. First operand has 33 places, 45 transitions, 148 flow. Second operand 3 states and 707 transitions. [2023-11-12 02:20:04,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 63 transitions, 310 flow [2023-11-12 02:20:04,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 63 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:04,344 INFO L231 Difference]: Finished difference. Result has 34 places, 46 transitions, 148 flow [2023-11-12 02:20:04,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=34, PETRI_TRANSITIONS=46} [2023-11-12 02:20:04,348 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-12 02:20:04,348 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 46 transitions, 148 flow [2023-11-12 02:20:04,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 02:20:04,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:04,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:20:04,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:04,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash -717696659, now seen corresponding path program 1 times [2023-11-12 02:20:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784040555] [2023-11-12 02:20:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:04,413 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 02:20:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784040555] [2023-11-12 02:20:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784040555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:04,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108422446] [2023-11-12 02:20:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 481 [2023-11-12 02:20:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 46 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 02:20:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 481 [2023-11-12 02:20:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:04,616 INFO L124 PetriNetUnfolderBase]: 351/608 cut-off events. [2023-11-12 02:20:04,616 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-12 02:20:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 608 events. 351/608 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2507 event pairs, 141 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1310. Up to 353 conditions per place. [2023-11-12 02:20:04,622 INFO L140 encePairwiseOnDemand]: 477/481 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-12 02:20:04,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 66 transitions, 331 flow [2023-11-12 02:20:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-11-12 02:20:04,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49133749133749133 [2023-11-12 02:20:04,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-11-12 02:20:04,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-11-12 02:20:04,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:04,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-11-12 02:20:04,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 02:20:04,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,634 INFO L175 Difference]: Start difference. First operand has 34 places, 46 transitions, 148 flow. Second operand 3 states and 709 transitions. [2023-11-12 02:20:04,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 66 transitions, 331 flow [2023-11-12 02:20:04,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:04,637 INFO L231 Difference]: Finished difference. Result has 36 places, 47 transitions, 160 flow [2023-11-12 02:20:04,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=36, PETRI_TRANSITIONS=47} [2023-11-12 02:20:04,638 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-11-12 02:20:04,639 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 47 transitions, 160 flow [2023-11-12 02:20:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 02:20:04,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:04,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:20:04,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:04,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -795297125, now seen corresponding path program 1 times [2023-11-12 02:20:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217990859] [2023-11-12 02:20:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:04,711 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 02:20:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217990859] [2023-11-12 02:20:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217990859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:04,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:04,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:04,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759645926] [2023-11-12 02:20:04,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:04,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:04,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:04,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:04,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 481 [2023-11-12 02:20:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 47 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:20:04,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:04,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 481 [2023-11-12 02:20:04,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:04,893 INFO L124 PetriNetUnfolderBase]: 349/596 cut-off events. [2023-11-12 02:20:04,894 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-12 02:20:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 596 events. 349/596 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2317 event pairs, 241 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1354. Up to 574 conditions per place. [2023-11-12 02:20:04,899 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 37 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2023-11-12 02:20:04,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 240 flow [2023-11-12 02:20:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-11-12 02:20:04,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546084546084546 [2023-11-12 02:20:04,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-11-12 02:20:04,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-11-12 02:20:04,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:04,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-11-12 02:20:04,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:04,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:04,911 INFO L175 Difference]: Start difference. First operand has 36 places, 47 transitions, 160 flow. Second operand 3 states and 656 transitions. [2023-11-12 02:20:04,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 240 flow [2023-11-12 02:20:04,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:04,914 INFO L231 Difference]: Finished difference. Result has 37 places, 45 transitions, 164 flow [2023-11-12 02:20:04,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=37, PETRI_TRANSITIONS=45} [2023-11-12 02:20:04,915 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-12 02:20:04,915 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 45 transitions, 164 flow [2023-11-12 02:20:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:20:04,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:04,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:20:04,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2126105237, now seen corresponding path program 1 times [2023-11-12 02:20:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308038936] [2023-11-12 02:20:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:05,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308038936] [2023-11-12 02:20:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308038936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25518118] [2023-11-12 02:20:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:05,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:05,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:05,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:20:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:05,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:05,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:05,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25518118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:05,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-12 02:20:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214680819] [2023-11-12 02:20:05,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:05,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 481 [2023-11-12 02:20:05,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 45 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 208.125) internal successors, (1665), 8 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states 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 02:20:05,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:05,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 481 [2023-11-12 02:20:05,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:05,524 INFO L124 PetriNetUnfolderBase]: 343/581 cut-off events. [2023-11-12 02:20:05,524 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-12 02:20:05,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 581 events. 343/581 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2158 event pairs, 241 based on Foata normal form. 3/463 useless extension candidates. Maximal degree in co-relation 1346. Up to 565 conditions per place. [2023-11-12 02:20:05,529 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 28 selfloop transitions, 10 changer transitions 0/39 dead transitions. [2023-11-12 02:20:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 210 flow [2023-11-12 02:20:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:20:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2023-11-12 02:20:05,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2023-11-12 02:20:05,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1278 transitions. [2023-11-12 02:20:05,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1278 transitions. [2023-11-12 02:20:05,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:05,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1278 transitions. [2023-11-12 02:20:05,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 02:20:05,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 02:20:05,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 481.0) internal successors, (3367), 7 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 02:20:05,548 INFO L175 Difference]: Start difference. First operand has 37 places, 45 transitions, 164 flow. Second operand 6 states and 1278 transitions. [2023-11-12 02:20:05,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 210 flow [2023-11-12 02:20:05,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:05,550 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 146 flow [2023-11-12 02:20:05,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-11-12 02:20:05,551 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-12 02:20:05,552 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 146 flow [2023-11-12 02:20:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 208.125) internal successors, (1665), 8 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states 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 02:20:05,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:05,553 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:05,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:20:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:20:05,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:05,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1399938533, now seen corresponding path program 2 times [2023-11-12 02:20:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572186036] [2023-11-12 02:20:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 02:20:05,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:05,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572186036] [2023-11-12 02:20:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572186036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017123428] [2023-11-12 02:20:05,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:05,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:05,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:05,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:05,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:20:06,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:20:06,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:06,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:20:06,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 02:20:06,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 02:20:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017123428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:06,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:20:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222220210] [2023-11-12 02:20:06,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:06,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:20:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:20:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:06,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 481 [2023-11-12 02:20:06,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 146 flow. Second operand has 13 states, 13 states have (on average 207.69230769230768) internal successors, (2700), 13 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 02:20:06,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:06,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 481 [2023-11-12 02:20:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:06,748 INFO L124 PetriNetUnfolderBase]: 343/583 cut-off events. [2023-11-12 02:20:06,748 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-12 02:20:06,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 583 events. 343/583 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2159 event pairs, 241 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 1340. Up to 565 conditions per place. [2023-11-12 02:20:06,753 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 28 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2023-11-12 02:20:06,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 234 flow [2023-11-12 02:20:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:20:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:20:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1482 transitions. [2023-11-12 02:20:06,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2023-11-12 02:20:06,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1482 transitions. [2023-11-12 02:20:06,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1482 transitions. [2023-11-12 02:20:06,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:06,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1482 transitions. [2023-11-12 02:20:06,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.71428571428572) internal successors, (1482), 7 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states 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 02:20:06,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 02:20:06,776 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 481.0) internal successors, (3848), 8 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 02:20:06,777 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 146 flow. Second operand 7 states and 1482 transitions. [2023-11-12 02:20:06,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 234 flow [2023-11-12 02:20:06,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 214 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:20:06,779 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 168 flow [2023-11-12 02:20:06,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-12 02:20:06,780 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-12 02:20:06,780 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 168 flow [2023-11-12 02:20:06,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.69230769230768) internal successors, (2700), 13 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 02:20:06,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:06,783 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:06,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:06,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:20:06,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:06,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash 373802219, now seen corresponding path program 3 times [2023-11-12 02:20:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:06,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255415133] [2023-11-12 02:20:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:06,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:07,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:07,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255415133] [2023-11-12 02:20:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255415133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:07,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001780764] [2023-11-12 02:20:07,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:20:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:07,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:07,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:20:07,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 02:20:07,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:07,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:07,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:07,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001780764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:20:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934532731] [2023-11-12 02:20:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:07,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 481 [2023-11-12 02:20:07,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 222.75) internal successors, (891), 4 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 02:20:07,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:07,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 481 [2023-11-12 02:20:07,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:07,500 INFO L124 PetriNetUnfolderBase]: 292/500 cut-off events. [2023-11-12 02:20:07,500 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-12 02:20:07,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 500 events. 292/500 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1819 event pairs, 36 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 1135. Up to 198 conditions per place. [2023-11-12 02:20:07,504 INFO L140 encePairwiseOnDemand]: 478/481 looper letters, 69 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-12 02:20:07,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 393 flow [2023-11-12 02:20:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 939 transitions. [2023-11-12 02:20:07,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48804573804573803 [2023-11-12 02:20:07,509 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 939 transitions. [2023-11-12 02:20:07,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 939 transitions. [2023-11-12 02:20:07,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:07,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 939 transitions. [2023-11-12 02:20:07,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 02:20:07,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:07,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:07,525 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 168 flow. Second operand 4 states and 939 transitions. [2023-11-12 02:20:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 393 flow [2023-11-12 02:20:07,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 72 transitions, 373 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:07,529 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 148 flow [2023-11-12 02:20:07,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-11-12 02:20:07,531 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-12 02:20:07,532 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 148 flow [2023-11-12 02:20:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.75) internal successors, (891), 4 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 02:20:07,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:07,533 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:07,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:20:07,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:07,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1964717012, now seen corresponding path program 1 times [2023-11-12 02:20:07,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:07,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796915274] [2023-11-12 02:20:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796915274] [2023-11-12 02:20:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796915274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:07,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773678898] [2023-11-12 02:20:07,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:07,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:07,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 481 [2023-11-12 02:20:07,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 02:20:07,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:07,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 481 [2023-11-12 02:20:07,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:08,031 INFO L124 PetriNetUnfolderBase]: 356/652 cut-off events. [2023-11-12 02:20:08,031 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2023-11-12 02:20:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 652 events. 356/652 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2694 event pairs, 200 based on Foata normal form. 24/593 useless extension candidates. Maximal degree in co-relation 1555. Up to 446 conditions per place. [2023-11-12 02:20:08,037 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 50 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-12 02:20:08,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 291 flow [2023-11-12 02:20:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-11-12 02:20:08,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48232848232848236 [2023-11-12 02:20:08,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-11-12 02:20:08,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-11-12 02:20:08,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:08,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-11-12 02:20:08,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 02:20:08,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:08,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:08,071 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 148 flow. Second operand 3 states and 696 transitions. [2023-11-12 02:20:08,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 291 flow [2023-11-12 02:20:08,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:08,074 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 165 flow [2023-11-12 02:20:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-12 02:20:08,076 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-12 02:20:08,076 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 165 flow [2023-11-12 02:20:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 02:20:08,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:08,077 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:08,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:20:08,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:08,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash 259184898, now seen corresponding path program 1 times [2023-11-12 02:20:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896579067] [2023-11-12 02:20:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896579067] [2023-11-12 02:20:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896579067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311279895] [2023-11-12 02:20:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:20:08,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 481 [2023-11-12 02:20:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:08,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:08,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 481 [2023-11-12 02:20:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:08,497 INFO L124 PetriNetUnfolderBase]: 352/657 cut-off events. [2023-11-12 02:20:08,497 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-11-12 02:20:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 657 events. 352/657 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2760 event pairs, 155 based on Foata normal form. 4/604 useless extension candidates. Maximal degree in co-relation 1678. Up to 357 conditions per place. [2023-11-12 02:20:08,502 INFO L140 encePairwiseOnDemand]: 475/481 looper letters, 63 selfloop transitions, 5 changer transitions 2/71 dead transitions. [2023-11-12 02:20:08,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 393 flow [2023-11-12 02:20:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:20:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2023-11-12 02:20:08,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723492723492724 [2023-11-12 02:20:08,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2023-11-12 02:20:08,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2023-11-12 02:20:08,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:08,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2023-11-12 02:20:08,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 02:20:08,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:08,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:08,519 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 165 flow. Second operand 5 states and 1136 transitions. [2023-11-12 02:20:08,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 393 flow [2023-11-12 02:20:08,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:08,524 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 183 flow [2023-11-12 02:20:08,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-12 02:20:08,526 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-11-12 02:20:08,526 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 183 flow [2023-11-12 02:20:08,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:08,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:08,527 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:08,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:20:08,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:08,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash -327620518, now seen corresponding path program 2 times [2023-11-12 02:20:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:08,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000937825] [2023-11-12 02:20:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:08,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000937825] [2023-11-12 02:20:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000937825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:08,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:08,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435835588] [2023-11-12 02:20:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:08,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:20:08,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 481 [2023-11-12 02:20:08,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:08,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:08,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 481 [2023-11-12 02:20:08,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:08,922 INFO L124 PetriNetUnfolderBase]: 440/807 cut-off events. [2023-11-12 02:20:08,923 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2023-11-12 02:20:08,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 807 events. 440/807 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3514 event pairs, 146 based on Foata normal form. 8/781 useless extension candidates. Maximal degree in co-relation 2203. Up to 598 conditions per place. [2023-11-12 02:20:08,929 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 59 selfloop transitions, 4 changer transitions 3/67 dead transitions. [2023-11-12 02:20:08,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 402 flow [2023-11-12 02:20:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2023-11-12 02:20:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47557172557172556 [2023-11-12 02:20:08,934 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2023-11-12 02:20:08,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2023-11-12 02:20:08,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:08,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2023-11-12 02:20:08,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:08,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:08,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:08,943 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 183 flow. Second operand 4 states and 915 transitions. [2023-11-12 02:20:08,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 402 flow [2023-11-12 02:20:08,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:08,947 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 221 flow [2023-11-12 02:20:08,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-12 02:20:08,948 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-12 02:20:08,948 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 221 flow [2023-11-12 02:20:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:08,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:08,949 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:20:08,949 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:08,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1373815424, now seen corresponding path program 3 times [2023-11-12 02:20:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:08,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813242963] [2023-11-12 02:20:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813242963] [2023-11-12 02:20:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813242963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330789222] [2023-11-12 02:20:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:09,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:20:09,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 481 [2023-11-12 02:20:09,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:09,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:09,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 481 [2023-11-12 02:20:09,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:09,286 INFO L124 PetriNetUnfolderBase]: 420/765 cut-off events. [2023-11-12 02:20:09,287 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2023-11-12 02:20:09,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 765 events. 420/765 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3229 event pairs, 167 based on Foata normal form. 8/740 useless extension candidates. Maximal degree in co-relation 2188. Up to 379 conditions per place. [2023-11-12 02:20:09,294 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 63 selfloop transitions, 7 changer transitions 3/74 dead transitions. [2023-11-12 02:20:09,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 464 flow [2023-11-12 02:20:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 919 transitions. [2023-11-12 02:20:09,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47765072765072764 [2023-11-12 02:20:09,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 919 transitions. [2023-11-12 02:20:09,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 919 transitions. [2023-11-12 02:20:09,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:09,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 919 transitions. [2023-11-12 02:20:09,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 02:20:09,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:09,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 481.0) internal successors, (2405), 5 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states 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 02:20:09,307 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 221 flow. Second operand 4 states and 919 transitions. [2023-11-12 02:20:09,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 464 flow [2023-11-12 02:20:09,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 460 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:09,311 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 248 flow [2023-11-12 02:20:09,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-12 02:20:09,312 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-11-12 02:20:09,313 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 248 flow [2023-11-12 02:20:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 02:20:09,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:09,314 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:09,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:20:09,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:09,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -290587276, now seen corresponding path program 1 times [2023-11-12 02:20:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:09,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448869499] [2023-11-12 02:20:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:09,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 02:20:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448869499] [2023-11-12 02:20:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448869499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:09,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232075129] [2023-11-12 02:20:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:09,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:09,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 481 [2023-11-12 02:20:09,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:09,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:09,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 481 [2023-11-12 02:20:09,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:09,622 INFO L124 PetriNetUnfolderBase]: 400/725 cut-off events. [2023-11-12 02:20:09,622 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-11-12 02:20:09,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 725 events. 400/725 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3033 event pairs, 84 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 2110. Up to 566 conditions per place. [2023-11-12 02:20:09,628 INFO L140 encePairwiseOnDemand]: 477/481 looper letters, 52 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-12 02:20:09,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 400 flow [2023-11-12 02:20:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-11-12 02:20:09,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48232848232848236 [2023-11-12 02:20:09,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-11-12 02:20:09,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-11-12 02:20:09,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:09,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-11-12 02:20:09,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 02:20:09,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:09,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:09,639 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 248 flow. Second operand 3 states and 696 transitions. [2023-11-12 02:20:09,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 400 flow [2023-11-12 02:20:09,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 388 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:09,643 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 256 flow [2023-11-12 02:20:09,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-12 02:20:09,645 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-12 02:20:09,645 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 256 flow [2023-11-12 02:20:09,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:20:09,646 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:09,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -290587277, now seen corresponding path program 1 times [2023-11-12 02:20:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276088455] [2023-11-12 02:20:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276088455] [2023-11-12 02:20:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276088455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:09,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816387936] [2023-11-12 02:20:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:09,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 481 [2023-11-12 02:20:09,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states 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 02:20:09,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:09,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 481 [2023-11-12 02:20:09,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:09,926 INFO L124 PetriNetUnfolderBase]: 383/698 cut-off events. [2023-11-12 02:20:09,927 INFO L125 PetriNetUnfolderBase]: For 827/827 co-relation queries the response was YES. [2023-11-12 02:20:09,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 698 events. 383/698 cut-off events. For 827/827 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2928 event pairs, 116 based on Foata normal form. 12/701 useless extension candidates. Maximal degree in co-relation 2071. Up to 641 conditions per place. [2023-11-12 02:20:09,932 INFO L140 encePairwiseOnDemand]: 479/481 looper letters, 49 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-12 02:20:09,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 370 flow [2023-11-12 02:20:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-11-12 02:20:09,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47955647955647956 [2023-11-12 02:20:09,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-11-12 02:20:09,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-11-12 02:20:09,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:09,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-11-12 02:20:09,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states 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 02:20:09,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:09,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 02:20:09,944 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 256 flow. Second operand 3 states and 692 transitions. [2023-11-12 02:20:09,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 370 flow [2023-11-12 02:20:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:09,948 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 248 flow [2023-11-12 02:20:09,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-12 02:20:09,949 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-12 02:20:09,949 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 248 flow [2023-11-12 02:20:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states 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 02:20:09,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:09,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:20:09,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1410918129, now seen corresponding path program 1 times [2023-11-12 02:20:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351176628] [2023-11-12 02:20:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:09,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:10,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351176628] [2023-11-12 02:20:10,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351176628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:10,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:10,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:10,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498319667] [2023-11-12 02:20:10,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:10,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:10,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:10,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 481 [2023-11-12 02:20:10,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states 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 02:20:10,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:10,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 481 [2023-11-12 02:20:10,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:10,478 INFO L124 PetriNetUnfolderBase]: 437/780 cut-off events. [2023-11-12 02:20:10,478 INFO L125 PetriNetUnfolderBase]: For 854/854 co-relation queries the response was YES. [2023-11-12 02:20:10,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 780 events. 437/780 cut-off events. For 854/854 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3335 event pairs, 82 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 2311. Up to 567 conditions per place. [2023-11-12 02:20:10,485 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 60 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2023-11-12 02:20:10,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 484 flow [2023-11-12 02:20:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:20:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2023-11-12 02:20:10,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602910602910603 [2023-11-12 02:20:10,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2023-11-12 02:20:10,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2023-11-12 02:20:10,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:10,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2023-11-12 02:20:10,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 02:20:10,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:10,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:10,500 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 248 flow. Second operand 5 states and 1107 transitions. [2023-11-12 02:20:10,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 484 flow [2023-11-12 02:20:10,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:10,505 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 289 flow [2023-11-12 02:20:10,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-12 02:20:10,506 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-11-12 02:20:10,506 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 289 flow [2023-11-12 02:20:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states 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 02:20:10,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:10,507 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:20:10,507 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-12 02:20:10,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1191173088, now seen corresponding path program 1 times [2023-11-12 02:20:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:10,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024238159] [2023-11-12 02:20:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:20:10,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:10,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024238159] [2023-11-12 02:20:10,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024238159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:10,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:10,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306823772] [2023-11-12 02:20:10,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:10,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:10,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:10,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 481 [2023-11-12 02:20:10,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states 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 02:20:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 481 [2023-11-12 02:20:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:11,056 INFO L124 PetriNetUnfolderBase]: 437/772 cut-off events. [2023-11-12 02:20:11,056 INFO L125 PetriNetUnfolderBase]: For 981/981 co-relation queries the response was YES. [2023-11-12 02:20:11,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 772 events. 437/772 cut-off events. For 981/981 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3285 event pairs, 82 based on Foata normal form. 10/781 useless extension candidates. Maximal degree in co-relation 2413. Up to 560 conditions per place. [2023-11-12 02:20:11,060 INFO L140 encePairwiseOnDemand]: 476/481 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-11-12 02:20:11,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 495 flow [2023-11-12 02:20:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:20:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1105 transitions. [2023-11-12 02:20:11,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-11-12 02:20:11,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1105 transitions. [2023-11-12 02:20:11,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1105 transitions. [2023-11-12 02:20:11,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:11,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1105 transitions. [2023-11-12 02:20:11,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states 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 02:20:11,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:11,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 481.0) internal successors, (2886), 6 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states 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 02:20:11,076 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 289 flow. Second operand 5 states and 1105 transitions. [2023-11-12 02:20:11,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 495 flow [2023-11-12 02:20:11,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:11,081 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-12 02:20:11,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-12 02:20:11,082 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-11-12 02:20:11,082 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-12 02:20:11,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states 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 02:20:11,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-12 02:20:11,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-12 02:20:11,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-12 02:20:11,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-12 02:20:11,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-12 02:20:11,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-12 02:20:11,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-12 02:20:11,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-12 02:20:11,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-12 02:20:11,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-12 02:20:11,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2023-11-12 02:20:11,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-11-12 02:20:11,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-12 02:20:11,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-12 02:20:11,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-12 02:20:11,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-12 02:20:11,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:20:11,089 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:11,094 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:20:11,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:20:11,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:20:11 BasicIcfg [2023-11-12 02:20:11,099 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:20:11,100 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:20:11,100 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:20:11,100 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:20:11,101 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:52" (3/4) ... [2023-11-12 02:20:11,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:20:11,106 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:20:11,106 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:20:11,115 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-12 02:20:11,115 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:20:11,116 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:20:11,116 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:20:11,217 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:20:11,218 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:20:11,218 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:20:11,219 INFO L158 Benchmark]: Toolchain (without parser) took 19883.42ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 124.0MB in the beginning and 120.6MB in the end (delta: 3.5MB). Peak memory consumption was 130.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,219 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:11,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.35ms. Allocated memory is still 159.4MB. Free memory was 124.0MB in the beginning and 112.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.98ms. Allocated memory is still 159.4MB. Free memory was 112.3MB in the beginning and 110.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,220 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 159.4MB. Free memory was 110.2MB in the beginning and 108.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,221 INFO L158 Benchmark]: RCFGBuilder took 714.79ms. Allocated memory is still 159.4MB. Free memory was 108.5MB in the beginning and 88.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,221 INFO L158 Benchmark]: TraceAbstraction took 18582.96ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 88.0MB in the beginning and 125.8MB in the end (delta: -37.9MB). Peak memory consumption was 90.3MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,222 INFO L158 Benchmark]: Witness Printer took 118.17ms. Allocated memory is still 285.2MB. Free memory was 125.8MB in the beginning and 120.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:20:11,224 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.35ms. Allocated memory is still 159.4MB. Free memory was 124.0MB in the beginning and 112.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.98ms. Allocated memory is still 159.4MB. Free memory was 112.3MB in the beginning and 110.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 159.4MB. Free memory was 110.2MB in the beginning and 108.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 714.79ms. Allocated memory is still 159.4MB. Free memory was 108.5MB in the beginning and 88.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18582.96ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 88.0MB in the beginning and 125.8MB in the end (delta: -37.9MB). Peak memory consumption was 90.3MB. Max. memory is 16.1GB. * Witness Printer took 118.17ms. Allocated memory is still 285.2MB. Free memory was 125.8MB in the beginning and 120.6MB 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: 8.5s, 204 PlacesBefore, 35 PlacesAfterwards, 215 TransitionsBefore, 34 TransitionsAfterwards, 4400 CoEnabledTransitionPairs, 7 FixpointIterations, 115 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 22 ConcurrentYvCompositions, 12 ChoiceCompositions, 243 TotalNumberOfCompositions, 5317 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, independent: 4434, independent conditional: 0, independent unconditional: 4434, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2532, independent: 2519, independent conditional: 0, independent unconditional: 2519, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, independent: 1915, independent conditional: 0, independent unconditional: 1915, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 2532, unknown conditional: 0, unknown unconditional: 2532] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 294 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1097 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 716 mSDsluCounter, 152 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2316 IncrementalHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 105 mSDtfsCounter, 2316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=17, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 343 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 3 NumberOfNonLiveVariables, 818 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 26 InterpolantComputations, 15 PerfectInterpolantSequences, 367/414 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:20:11,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0415f2b-f0fd-436e-8b4d-4b680d9963e0/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