./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:40,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:40,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:17:40,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:40,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:40,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:40,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:40,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:40,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:40,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:40,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:40,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:40,872 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:40,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:40,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:40,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:40,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:40,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:40,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:40,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:40,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:40,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:40,878 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:17:40,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:40,879 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:40,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:40,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:40,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:40,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:40,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:40,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:40,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:40,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:40,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:40,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:40,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:40,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:40,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:40,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:40,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:40,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:40,893 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_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2023-11-06 22:17:41,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:41,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:41,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:41,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:41,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:41,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 22:17:44,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:44,574 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:44,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 22:17:44,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/data/dcd39f1be/28eba634a85948d4abd9cdabc4d627a9/FLAG1dbf1d37a [2023-11-06 22:17:44,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/data/dcd39f1be/28eba634a85948d4abd9cdabc4d627a9 [2023-11-06 22:17:44,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:44,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:44,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:44,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:44,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:44,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:44" (1/1) ... [2023-11-06 22:17:44,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a8823b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:44, skipping insertion in model container [2023-11-06 22:17:44,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:44" (1/1) ... [2023-11-06 22:17:44,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:44,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:45,009 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:45,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:45,080 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:45,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45 WrapperNode [2023-11-06 22:17:45,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:45,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:45,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:45,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:45,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,155 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 220 [2023-11-06 22:17:45,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:45,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:45,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:45,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:45,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:45,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:45,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:45,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:45,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (1/1) ... [2023-11-06 22:17:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:45,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:45,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:17:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:17:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:17:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:17:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:17:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:17:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:17:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:17:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:17:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:17:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:45,317 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:17:45,451 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:45,454 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:46,055 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:46,071 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:46,071 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:17:46,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:46 BoogieIcfgContainer [2023-11-06 22:17:46,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:46,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:46,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:46,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:46,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:44" (1/3) ... [2023-11-06 22:17:46,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d623ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:46, skipping insertion in model container [2023-11-06 22:17:46,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:45" (2/3) ... [2023-11-06 22:17:46,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d623ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:46, skipping insertion in model container [2023-11-06 22:17:46,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:46" (3/3) ... [2023-11-06 22:17:46,092 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-06 22:17:46,103 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:17:46,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:46,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:17:46,118 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:17:46,247 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:17:46,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 337 transitions, 695 flow [2023-11-06 22:17:46,466 INFO L124 PetriNetUnfolderBase]: 30/334 cut-off events. [2023-11-06 22:17:46,466 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:17:46,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 30/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 327 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 226. Up to 3 conditions per place. [2023-11-06 22:17:46,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 337 transitions, 695 flow [2023-11-06 22:17:46,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 252 transitions, 519 flow [2023-11-06 22:17:46,500 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:17:46,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 252 transitions, 519 flow [2023-11-06 22:17:46,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 252 transitions, 519 flow [2023-11-06 22:17:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 252 transitions, 519 flow [2023-11-06 22:17:46,589 INFO L124 PetriNetUnfolderBase]: 21/252 cut-off events. [2023-11-06 22:17:46,589 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:17:46,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 252 events. 21/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 269 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 226. Up to 3 conditions per place. [2023-11-06 22:17:46,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-11-06 22:17:57,341 INFO L134 LiptonReduction]: Checked pairs total: 5968 [2023-11-06 22:17:57,341 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-11-06 22:17:57,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:57,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19bdf05b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:57,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:17:57,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:17:57,389 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:17:57,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:17:57,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:57,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:17:57,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:17:57,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 37739, now seen corresponding path program 1 times [2023-11-06 22:17:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538807959] [2023-11-06 22:17:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:57,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538807959] [2023-11-06 22:17:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538807959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:57,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:17:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363364837] [2023-11-06 22:17:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:57,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 623 [2023-11-06 22:17:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:57,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:57,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 623 [2023-11-06 22:17:57,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:17:58,183 INFO L124 PetriNetUnfolderBase]: 815/1136 cut-off events. [2023-11-06 22:17:58,184 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:17:58,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 1136 events. 815/1136 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3730 event pairs, 527 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 2004. Up to 1132 conditions per place. [2023-11-06 22:17:58,202 INFO L140 encePairwiseOnDemand]: 610/623 looper letters, 38 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2023-11-06 22:17:58,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 195 flow [2023-11-06 22:17:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:17:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-11-06 22:17:58,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088282504012841 [2023-11-06 22:17:58,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-11-06 22:17:58,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-11-06 22:17:58,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:17:58,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-11-06 22:17:58,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:58,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:58,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:58,268 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 93 flow. Second operand 3 states and 951 transitions. [2023-11-06 22:17:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 195 flow [2023-11-06 22:17:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:17:58,278 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 148 flow [2023-11-06 22:17:58,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2023-11-06 22:17:58,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-11-06 22:17:58,285 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 148 flow [2023-11-06 22:17:58,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:58,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:58,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:17:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:17:58,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:17:58,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1171533, now seen corresponding path program 1 times [2023-11-06 22:17:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213378811] [2023-11-06 22:17:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:58,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213378811] [2023-11-06 22:17:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213378811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:17:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991211435] [2023-11-06 22:17:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:58,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:58,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:58,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:17:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:58,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:58,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:58,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991211435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:17:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:17:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195598592] [2023-11-06 22:17:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:58,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:58,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:58,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 623 [2023-11-06 22:17:58,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:58,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:58,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 623 [2023-11-06 22:17:58,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:17:59,004 INFO L124 PetriNetUnfolderBase]: 815/1133 cut-off events. [2023-11-06 22:17:59,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:17:59,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1133 events. 815/1133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3716 event pairs, 527 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 2290. Up to 1120 conditions per place. [2023-11-06 22:17:59,019 INFO L140 encePairwiseOnDemand]: 613/623 looper letters, 34 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-11-06 22:17:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 220 flow [2023-11-06 22:17:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:17:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:17:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1245 transitions. [2023-11-06 22:17:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4995987158908507 [2023-11-06 22:17:59,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1245 transitions. [2023-11-06 22:17:59,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1245 transitions. [2023-11-06 22:17:59,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:17:59,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1245 transitions. [2023-11-06 22:17:59,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,051 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 148 flow. Second operand 4 states and 1245 transitions. [2023-11-06 22:17:59,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 220 flow [2023-11-06 22:17:59,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:17:59,056 INFO L231 Difference]: Finished difference. Result has 38 places, 42 transitions, 138 flow [2023-11-06 22:17:59,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=38, PETRI_TRANSITIONS=42} [2023-11-06 22:17:59,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-11-06 22:17:59,058 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 42 transitions, 138 flow [2023-11-06 22:17:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:59,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:17:59,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:17:59,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:17:59,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1171551, now seen corresponding path program 1 times [2023-11-06 22:17:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083927915] [2023-11-06 22:17:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:59,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083927915] [2023-11-06 22:17:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083927915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:17:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396144289] [2023-11-06 22:17:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:59,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:59,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:17:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:59,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:59,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:59,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396144289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:17:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:17:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267077673] [2023-11-06 22:17:59,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:59,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:17:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:17:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:59,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 623 [2023-11-06 22:17:59,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:59,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 623 [2023-11-06 22:17:59,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:17:59,912 INFO L124 PetriNetUnfolderBase]: 824/1151 cut-off events. [2023-11-06 22:17:59,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:17:59,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 1151 events. 824/1151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3774 event pairs, 527 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 2290. Up to 1132 conditions per place. [2023-11-06 22:17:59,923 INFO L140 encePairwiseOnDemand]: 613/623 looper letters, 35 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2023-11-06 22:17:59,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 348 flow [2023-11-06 22:17:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:17:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:17:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2023-11-06 22:17:59,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 22:17:59,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2023-11-06 22:17:59,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2023-11-06 22:17:59,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:17:59,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2023-11-06 22:17:59,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,951 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 138 flow. Second operand 6 states and 1869 transitions. [2023-11-06 22:17:59,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 348 flow [2023-11-06 22:17:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:17:59,955 INFO L231 Difference]: Finished difference. Result has 44 places, 60 transitions, 312 flow [2023-11-06 22:17:59,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=44, PETRI_TRANSITIONS=60} [2023-11-06 22:17:59,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-11-06 22:17:59,956 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 60 transitions, 312 flow [2023-11-06 22:17:59,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:17:59,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:59,959 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:17:59,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:00,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:00,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:00,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash 543013885, now seen corresponding path program 2 times [2023-11-06 22:18:00,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:00,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491183858] [2023-11-06 22:18:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:00,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491183858] [2023-11-06 22:18:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491183858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710709752] [2023-11-06 22:18:00,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:00,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:00,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:18:00,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:00,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:00,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:00,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:18:00,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710709752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:18:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63730870] [2023-11-06 22:18:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:00,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:00,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:00,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:00,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 623 [2023-11-06 22:18:00,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 60 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:00,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:00,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 623 [2023-11-06 22:18:00,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:00,697 INFO L124 PetriNetUnfolderBase]: 824/1150 cut-off events. [2023-11-06 22:18:00,697 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:18:00,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 1150 events. 824/1150 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3777 event pairs, 527 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 2364. Up to 1145 conditions per place. [2023-11-06 22:18:00,707 INFO L140 encePairwiseOnDemand]: 620/623 looper letters, 53 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-06 22:18:00,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 420 flow [2023-11-06 22:18:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 954 transitions. [2023-11-06 22:18:00,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104333868378812 [2023-11-06 22:18:00,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 954 transitions. [2023-11-06 22:18:00,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 954 transitions. [2023-11-06 22:18:00,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:00,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 954 transitions. [2023-11-06 22:18:00,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:00,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:00,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:00,725 INFO L175 Difference]: Start difference. First operand has 44 places, 60 transitions, 312 flow. Second operand 3 states and 954 transitions. [2023-11-06 22:18:00,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 420 flow [2023-11-06 22:18:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 383 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:00,733 INFO L231 Difference]: Finished difference. Result has 44 places, 59 transitions, 277 flow [2023-11-06 22:18:00,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=44, PETRI_TRANSITIONS=59} [2023-11-06 22:18:00,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-11-06 22:18:00,734 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 59 transitions, 277 flow [2023-11-06 22:18:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:00,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:00,735 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:18:00,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:00,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:00,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:00,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 601187196, now seen corresponding path program 1 times [2023-11-06 22:18:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:00,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126023962] [2023-11-06 22:18:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:00,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126023962] [2023-11-06 22:18:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126023962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318195500] [2023-11-06 22:18:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:01,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:01,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:01,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:01,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:18:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:01,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:18:01,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:01,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318195500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:01,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:18:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660602885] [2023-11-06 22:18:01,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:18:01,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:18:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:01,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 623 [2023-11-06 22:18:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 59 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 301.15384615384613) internal successors, (3915), 13 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:01,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 623 [2023-11-06 22:18:01,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:01,974 INFO L124 PetriNetUnfolderBase]: 842/1186 cut-off events. [2023-11-06 22:18:01,974 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-06 22:18:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2576 conditions, 1186 events. 842/1186 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3985 event pairs, 527 based on Foata normal form. 12/572 useless extension candidates. Maximal degree in co-relation 2472. Up to 1137 conditions per place. [2023-11-06 22:18:01,985 INFO L140 encePairwiseOnDemand]: 614/623 looper letters, 34 selfloop transitions, 61 changer transitions 0/95 dead transitions. [2023-11-06 22:18:01,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 95 transitions, 701 flow [2023-11-06 22:18:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:18:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:18:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3707 transitions. [2023-11-06 22:18:02,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958533975387908 [2023-11-06 22:18:02,000 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3707 transitions. [2023-11-06 22:18:02,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3707 transitions. [2023-11-06 22:18:02,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:02,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3707 transitions. [2023-11-06 22:18:02,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 308.9166666666667) internal successors, (3707), 12 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,038 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,038 INFO L175 Difference]: Start difference. First operand has 44 places, 59 transitions, 277 flow. Second operand 12 states and 3707 transitions. [2023-11-06 22:18:02,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 95 transitions, 701 flow [2023-11-06 22:18:02,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:02,044 INFO L231 Difference]: Finished difference. Result has 59 places, 95 transitions, 695 flow [2023-11-06 22:18:02,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=59, PETRI_TRANSITIONS=95} [2023-11-06 22:18:02,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-06 22:18:02,048 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 95 transitions, 695 flow [2023-11-06 22:18:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 301.15384615384613) internal successors, (3915), 13 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:02,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:02,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:02,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:02,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:02,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash 598371279, now seen corresponding path program 1 times [2023-11-06 22:18:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:02,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708396212] [2023-11-06 22:18:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:02,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708396212] [2023-11-06 22:18:02,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708396212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:02,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:02,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712993441] [2023-11-06 22:18:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:02,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:02,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 95 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:02,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:02,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:02,668 INFO L124 PetriNetUnfolderBase]: 1386/1934 cut-off events. [2023-11-06 22:18:02,669 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-06 22:18:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 1934 events. 1386/1934 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7604 event pairs, 323 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 4094. Up to 1169 conditions per place. [2023-11-06 22:18:02,727 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 116 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-06 22:18:02,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 982 flow [2023-11-06 22:18:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-11-06 22:18:02,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345104333868379 [2023-11-06 22:18:02,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-11-06 22:18:02,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-11-06 22:18:02,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:02,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-11-06 22:18:02,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,745 INFO L175 Difference]: Start difference. First operand has 59 places, 95 transitions, 695 flow. Second operand 3 states and 999 transitions. [2023-11-06 22:18:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 982 flow [2023-11-06 22:18:02,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 118 transitions, 804 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-06 22:18:02,753 INFO L231 Difference]: Finished difference. Result has 57 places, 96 transitions, 531 flow [2023-11-06 22:18:02,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=57, PETRI_TRANSITIONS=96} [2023-11-06 22:18:02,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-11-06 22:18:02,755 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 96 transitions, 531 flow [2023-11-06 22:18:02,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:02,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:02,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:02,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:18:02,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:02,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash -490762843, now seen corresponding path program 1 times [2023-11-06 22:18:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681110718] [2023-11-06 22:18:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:02,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681110718] [2023-11-06 22:18:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681110718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:02,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062245772] [2023-11-06 22:18:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:02,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:03,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 623 [2023-11-06 22:18:03,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 96 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:03,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 623 [2023-11-06 22:18:03,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:03,420 INFO L124 PetriNetUnfolderBase]: 1648/2341 cut-off events. [2023-11-06 22:18:03,420 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-11-06 22:18:03,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5330 conditions, 2341 events. 1648/2341 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9025 event pairs, 1066 based on Foata normal form. 0/1285 useless extension candidates. Maximal degree in co-relation 5170. Up to 1933 conditions per place. [2023-11-06 22:18:03,477 INFO L140 encePairwiseOnDemand]: 614/623 looper letters, 146 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2023-11-06 22:18:03,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 162 transitions, 1216 flow [2023-11-06 22:18:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2023-11-06 22:18:03,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924558587479936 [2023-11-06 22:18:03,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2023-11-06 22:18:03,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2023-11-06 22:18:03,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:03,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2023-11-06 22:18:03,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,500 INFO L175 Difference]: Start difference. First operand has 57 places, 96 transitions, 531 flow. Second operand 5 states and 1534 transitions. [2023-11-06 22:18:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 162 transitions, 1216 flow [2023-11-06 22:18:03,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 162 transitions, 1214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:03,508 INFO L231 Difference]: Finished difference. Result has 62 places, 109 transitions, 706 flow [2023-11-06 22:18:03,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=62, PETRI_TRANSITIONS=109} [2023-11-06 22:18:03,510 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-11-06 22:18:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 706 flow [2023-11-06 22:18:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:03,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:03,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:18:03,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:03,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash -487156143, now seen corresponding path program 1 times [2023-11-06 22:18:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:03,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005976899] [2023-11-06 22:18:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005976899] [2023-11-06 22:18:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005976899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:03,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:03,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310532175] [2023-11-06 22:18:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:03,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:03,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:03,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:04,168 INFO L124 PetriNetUnfolderBase]: 2646/3715 cut-off events. [2023-11-06 22:18:04,168 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-11-06 22:18:04,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8582 conditions, 3715 events. 2646/3715 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16089 event pairs, 606 based on Foata normal form. 0/2403 useless extension candidates. Maximal degree in co-relation 8414. Up to 2301 conditions per place. [2023-11-06 22:18:04,207 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 129 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-06 22:18:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 131 transitions, 1028 flow [2023-11-06 22:18:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2023-11-06 22:18:04,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5334403424291064 [2023-11-06 22:18:04,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2023-11-06 22:18:04,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2023-11-06 22:18:04,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:04,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2023-11-06 22:18:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:04,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:04,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:04,223 INFO L175 Difference]: Start difference. First operand has 62 places, 109 transitions, 706 flow. Second operand 3 states and 997 transitions. [2023-11-06 22:18:04,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 131 transitions, 1028 flow [2023-11-06 22:18:04,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 131 transitions, 1022 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:04,232 INFO L231 Difference]: Finished difference. Result has 64 places, 110 transitions, 714 flow [2023-11-06 22:18:04,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=64, PETRI_TRANSITIONS=110} [2023-11-06 22:18:04,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-11-06 22:18:04,234 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 110 transitions, 714 flow [2023-11-06 22:18:04,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:04,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:04,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:18:04,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:04,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2078143083, now seen corresponding path program 1 times [2023-11-06 22:18:04,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:04,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940577815] [2023-11-06 22:18:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940577815] [2023-11-06 22:18:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940577815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505839480] [2023-11-06 22:18:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:04,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:04,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:04,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 110 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:04,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:04,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:04,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:05,089 INFO L124 PetriNetUnfolderBase]: 3798/5307 cut-off events. [2023-11-06 22:18:05,090 INFO L125 PetriNetUnfolderBase]: For 1222/1222 co-relation queries the response was YES. [2023-11-06 22:18:05,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12807 conditions, 5307 events. 3798/5307 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23905 event pairs, 966 based on Foata normal form. 168/3907 useless extension candidates. Maximal degree in co-relation 12638. Up to 3241 conditions per place. [2023-11-06 22:18:05,147 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 129 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-06 22:18:05,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 131 transitions, 1039 flow [2023-11-06 22:18:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-06 22:18:05,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323702514713751 [2023-11-06 22:18:05,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-06 22:18:05,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-06 22:18:05,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:05,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-06 22:18:05,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:05,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:05,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:05,166 INFO L175 Difference]: Start difference. First operand has 64 places, 110 transitions, 714 flow. Second operand 3 states and 995 transitions. [2023-11-06 22:18:05,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 131 transitions, 1039 flow [2023-11-06 22:18:05,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 131 transitions, 1036 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:05,177 INFO L231 Difference]: Finished difference. Result has 66 places, 111 transitions, 726 flow [2023-11-06 22:18:05,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=66, PETRI_TRANSITIONS=111} [2023-11-06 22:18:05,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2023-11-06 22:18:05,178 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 111 transitions, 726 flow [2023-11-06 22:18:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:05,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:05,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:05,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:18:05,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:05,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1806327426, now seen corresponding path program 1 times [2023-11-06 22:18:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738766007] [2023-11-06 22:18:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:18:05,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:05,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738766007] [2023-11-06 22:18:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738766007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710288056] [2023-11-06 22:18:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:05,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 623 [2023-11-06 22:18:05,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 111 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:05,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:05,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 623 [2023-11-06 22:18:05,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:06,713 INFO L124 PetriNetUnfolderBase]: 5168/7347 cut-off events. [2023-11-06 22:18:06,713 INFO L125 PetriNetUnfolderBase]: For 2243/2243 co-relation queries the response was YES. [2023-11-06 22:18:06,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18769 conditions, 7347 events. 5168/7347 cut-off events. For 2243/2243 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 35677 event pairs, 2292 based on Foata normal form. 114/5933 useless extension candidates. Maximal degree in co-relation 18535. Up to 2669 conditions per place. [2023-11-06 22:18:06,786 INFO L140 encePairwiseOnDemand]: 617/623 looper letters, 167 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2023-11-06 22:18:06,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 183 transitions, 1415 flow [2023-11-06 22:18:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1545 transitions. [2023-11-06 22:18:06,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959871589085072 [2023-11-06 22:18:06,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1545 transitions. [2023-11-06 22:18:06,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1545 transitions. [2023-11-06 22:18:06,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:06,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1545 transitions. [2023-11-06 22:18:06,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:06,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:06,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:06,809 INFO L175 Difference]: Start difference. First operand has 66 places, 111 transitions, 726 flow. Second operand 5 states and 1545 transitions. [2023-11-06 22:18:06,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 183 transitions, 1415 flow [2023-11-06 22:18:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 183 transitions, 1411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:06,822 INFO L231 Difference]: Finished difference. Result has 70 places, 111 transitions, 759 flow [2023-11-06 22:18:06,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=759, PETRI_PLACES=70, PETRI_TRANSITIONS=111} [2023-11-06 22:18:06,823 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-11-06 22:18:06,823 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 111 transitions, 759 flow [2023-11-06 22:18:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:06,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:06,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:06,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:18:06,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:06,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -5585454, now seen corresponding path program 1 times [2023-11-06 22:18:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309023721] [2023-11-06 22:18:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:06,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309023721] [2023-11-06 22:18:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309023721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749904371] [2023-11-06 22:18:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:06,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:06,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:06,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 111 transitions, 759 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:07,923 INFO L124 PetriNetUnfolderBase]: 4610/6545 cut-off events. [2023-11-06 22:18:07,923 INFO L125 PetriNetUnfolderBase]: For 2648/2648 co-relation queries the response was YES. [2023-11-06 22:18:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16636 conditions, 6545 events. 4610/6545 cut-off events. For 2648/2648 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30627 event pairs, 3218 based on Foata normal form. 0/5327 useless extension candidates. Maximal degree in co-relation 16399. Up to 6545 conditions per place. [2023-11-06 22:18:07,994 INFO L140 encePairwiseOnDemand]: 621/623 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-06 22:18:07,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 110 transitions, 975 flow [2023-11-06 22:18:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 974 transitions. [2023-11-06 22:18:08,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211342964151953 [2023-11-06 22:18:08,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 974 transitions. [2023-11-06 22:18:08,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 974 transitions. [2023-11-06 22:18:08,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:08,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 974 transitions. [2023-11-06 22:18:08,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:08,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:08,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:08,015 INFO L175 Difference]: Start difference. First operand has 70 places, 111 transitions, 759 flow. Second operand 3 states and 974 transitions. [2023-11-06 22:18:08,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 110 transitions, 975 flow [2023-11-06 22:18:08,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 965 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:08,027 INFO L231 Difference]: Finished difference. Result has 69 places, 110 transitions, 747 flow [2023-11-06 22:18:08,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=747, PETRI_PLACES=69, PETRI_TRANSITIONS=110} [2023-11-06 22:18:08,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2023-11-06 22:18:08,029 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 110 transitions, 747 flow [2023-11-06 22:18:08,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:08,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:08,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:08,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:18:08,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:08,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash -259475869, now seen corresponding path program 1 times [2023-11-06 22:18:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720965878] [2023-11-06 22:18:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:18:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720965878] [2023-11-06 22:18:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720965878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568239980] [2023-11-06 22:18:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:08,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:08,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:08,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:18:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:08,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:08,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:08,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568239980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:08,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-11-06 22:18:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887947598] [2023-11-06 22:18:08,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:08,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:18:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:18:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:09,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 623 [2023-11-06 22:18:09,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 110 transitions, 747 flow. Second operand has 13 states, 13 states have (on average 288.3076923076923) internal successors, (3748), 13 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:09,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:09,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 623 [2023-11-06 22:18:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:11,005 INFO L124 PetriNetUnfolderBase]: 6688/9527 cut-off events. [2023-11-06 22:18:11,005 INFO L125 PetriNetUnfolderBase]: For 3487/3487 co-relation queries the response was YES. [2023-11-06 22:18:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 9527 events. 6688/9527 cut-off events. For 3487/3487 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 48906 event pairs, 3100 based on Foata normal form. 100/8029 useless extension candidates. Maximal degree in co-relation 23816. Up to 2338 conditions per place. [2023-11-06 22:18:11,068 INFO L140 encePairwiseOnDemand]: 612/623 looper letters, 222 selfloop transitions, 28 changer transitions 0/250 dead transitions. [2023-11-06 22:18:11,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 250 transitions, 1877 flow [2023-11-06 22:18:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:18:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:18:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3565 transitions. [2023-11-06 22:18:11,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685928303905833 [2023-11-06 22:18:11,082 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3565 transitions. [2023-11-06 22:18:11,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3565 transitions. [2023-11-06 22:18:11,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:11,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3565 transitions. [2023-11-06 22:18:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 297.0833333333333) internal successors, (3565), 12 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:11,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:11,112 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:11,112 INFO L175 Difference]: Start difference. First operand has 69 places, 110 transitions, 747 flow. Second operand 12 states and 3565 transitions. [2023-11-06 22:18:11,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 250 transitions, 1877 flow [2023-11-06 22:18:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 250 transitions, 1876 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:11,126 INFO L231 Difference]: Finished difference. Result has 82 places, 117 transitions, 914 flow [2023-11-06 22:18:11,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=914, PETRI_PLACES=82, PETRI_TRANSITIONS=117} [2023-11-06 22:18:11,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2023-11-06 22:18:11,127 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 117 transitions, 914 flow [2023-11-06 22:18:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 288.3076923076923) internal successors, (3748), 13 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:11,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:11,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:11,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:11,335 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:11,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash -5585453, now seen corresponding path program 1 times [2023-11-06 22:18:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:11,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811507990] [2023-11-06 22:18:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811507990] [2023-11-06 22:18:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811507990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608299473] [2023-11-06 22:18:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:11,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:11,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 623 [2023-11-06 22:18:11,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 117 transitions, 914 flow. Second operand has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:11,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:11,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 623 [2023-11-06 22:18:11,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:13,037 INFO L124 PetriNetUnfolderBase]: 5724/8171 cut-off events. [2023-11-06 22:18:13,037 INFO L125 PetriNetUnfolderBase]: For 4951/4951 co-relation queries the response was YES. [2023-11-06 22:18:13,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21293 conditions, 8171 events. 5724/8171 cut-off events. For 4951/4951 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41747 event pairs, 1706 based on Foata normal form. 0/6859 useless extension candidates. Maximal degree in co-relation 21260. Up to 4497 conditions per place. [2023-11-06 22:18:13,117 INFO L140 encePairwiseOnDemand]: 615/623 looper letters, 154 selfloop transitions, 20 changer transitions 1/175 dead transitions. [2023-11-06 22:18:13,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 175 transitions, 1524 flow [2023-11-06 22:18:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1829 transitions. [2023-11-06 22:18:13,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48929909042268593 [2023-11-06 22:18:13,127 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1829 transitions. [2023-11-06 22:18:13,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1829 transitions. [2023-11-06 22:18:13,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:13,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1829 transitions. [2023-11-06 22:18:13,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 304.8333333333333) internal successors, (1829), 6 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:13,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:13,147 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:13,148 INFO L175 Difference]: Start difference. First operand has 82 places, 117 transitions, 914 flow. Second operand 6 states and 1829 transitions. [2023-11-06 22:18:13,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 175 transitions, 1524 flow [2023-11-06 22:18:13,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 175 transitions, 1483 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:18:13,165 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 921 flow [2023-11-06 22:18:13,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2023-11-06 22:18:13,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2023-11-06 22:18:13,167 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 921 flow [2023-11-06 22:18:13,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:13,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:13,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:18:13,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:13,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2072685, now seen corresponding path program 1 times [2023-11-06 22:18:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998628683] [2023-11-06 22:18:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998628683] [2023-11-06 22:18:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998628683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:13,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:13,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518735799] [2023-11-06 22:18:13,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:13,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:13,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:13,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:13,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 921 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:13,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:13,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:13,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:14,162 INFO L124 PetriNetUnfolderBase]: 4844/6931 cut-off events. [2023-11-06 22:18:14,162 INFO L125 PetriNetUnfolderBase]: For 4851/4851 co-relation queries the response was YES. [2023-11-06 22:18:14,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18818 conditions, 6931 events. 4844/6931 cut-off events. For 4851/4851 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33563 event pairs, 3326 based on Foata normal form. 0/6605 useless extension candidates. Maximal degree in co-relation 18784. Up to 6931 conditions per place. [2023-11-06 22:18:14,221 INFO L140 encePairwiseOnDemand]: 621/623 looper letters, 114 selfloop transitions, 1 changer transitions 1/116 dead transitions. [2023-11-06 22:18:14,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 1149 flow [2023-11-06 22:18:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2023-11-06 22:18:14,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200642054574639 [2023-11-06 22:18:14,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2023-11-06 22:18:14,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2023-11-06 22:18:14,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:14,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2023-11-06 22:18:14,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:14,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:14,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:14,237 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 921 flow. Second operand 3 states and 972 transitions. [2023-11-06 22:18:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 1149 flow [2023-11-06 22:18:14,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 1126 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:18:14,256 INFO L231 Difference]: Finished difference. Result has 82 places, 115 transitions, 882 flow [2023-11-06 22:18:14,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=882, PETRI_PLACES=82, PETRI_TRANSITIONS=115} [2023-11-06 22:18:14,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2023-11-06 22:18:14,258 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 115 transitions, 882 flow [2023-11-06 22:18:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:14,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:14,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:14,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:18:14,260 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:14,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -111513358, now seen corresponding path program 1 times [2023-11-06 22:18:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:14,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909179340] [2023-11-06 22:18:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909179340] [2023-11-06 22:18:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909179340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65198076] [2023-11-06 22:18:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:14,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:14,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 623 [2023-11-06 22:18:14,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 115 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:14,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:14,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 623 [2023-11-06 22:18:14,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:16,082 INFO L124 PetriNetUnfolderBase]: 6771/9823 cut-off events. [2023-11-06 22:18:16,082 INFO L125 PetriNetUnfolderBase]: For 5306/5306 co-relation queries the response was YES. [2023-11-06 22:18:16,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25901 conditions, 9823 events. 6771/9823 cut-off events. For 5306/5306 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52456 event pairs, 2831 based on Foata normal form. 346/9679 useless extension candidates. Maximal degree in co-relation 25867. Up to 3755 conditions per place. [2023-11-06 22:18:16,160 INFO L140 encePairwiseOnDemand]: 618/623 looper letters, 126 selfloop transitions, 29 changer transitions 3/158 dead transitions. [2023-11-06 22:18:16,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 158 transitions, 1344 flow [2023-11-06 22:18:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2023-11-06 22:18:16,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49213483146067416 [2023-11-06 22:18:16,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2023-11-06 22:18:16,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2023-11-06 22:18:16,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:16,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2023-11-06 22:18:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:16,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:16,180 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:16,181 INFO L175 Difference]: Start difference. First operand has 82 places, 115 transitions, 882 flow. Second operand 5 states and 1533 transitions. [2023-11-06 22:18:16,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 158 transitions, 1344 flow [2023-11-06 22:18:16,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 158 transitions, 1343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:16,197 INFO L231 Difference]: Finished difference. Result has 85 places, 114 transitions, 927 flow [2023-11-06 22:18:16,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=85, PETRI_TRANSITIONS=114} [2023-11-06 22:18:16,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2023-11-06 22:18:16,198 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 114 transitions, 927 flow [2023-11-06 22:18:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:16,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:16,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:18:16,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:16,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 125131427, now seen corresponding path program 1 times [2023-11-06 22:18:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:16,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52360212] [2023-11-06 22:18:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:18:16,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52360212] [2023-11-06 22:18:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52360212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010784317] [2023-11-06 22:18:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:16,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:16,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:16,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:18:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:16,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:16,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:18:16,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:18:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010784317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:16,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2023-11-06 22:18:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603295551] [2023-11-06 22:18:16,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:18:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:18:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:18:17,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 623 [2023-11-06 22:18:17,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 114 transitions, 927 flow. Second operand has 12 states, 12 states have (on average 288.6666666666667) internal successors, (3464), 12 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:17,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:17,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 623 [2023-11-06 22:18:17,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:20,117 INFO L124 PetriNetUnfolderBase]: 11884/17124 cut-off events. [2023-11-06 22:18:20,117 INFO L125 PetriNetUnfolderBase]: For 11568/11568 co-relation queries the response was YES. [2023-11-06 22:18:20,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45708 conditions, 17124 events. 11884/17124 cut-off events. For 11568/11568 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 97733 event pairs, 4277 based on Foata normal form. 342/16700 useless extension candidates. Maximal degree in co-relation 45673. Up to 3765 conditions per place. [2023-11-06 22:18:20,363 INFO L140 encePairwiseOnDemand]: 610/623 looper letters, 263 selfloop transitions, 31 changer transitions 14/308 dead transitions. [2023-11-06 22:18:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 308 transitions, 2618 flow [2023-11-06 22:18:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:18:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:18:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3590 transitions. [2023-11-06 22:18:20,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48020331728196897 [2023-11-06 22:18:20,377 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3590 transitions. [2023-11-06 22:18:20,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3590 transitions. [2023-11-06 22:18:20,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:20,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3590 transitions. [2023-11-06 22:18:20,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 299.1666666666667) internal successors, (3590), 12 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,407 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 623.0) internal successors, (8099), 13 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,407 INFO L175 Difference]: Start difference. First operand has 85 places, 114 transitions, 927 flow. Second operand 12 states and 3590 transitions. [2023-11-06 22:18:20,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 308 transitions, 2618 flow [2023-11-06 22:18:20,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 308 transitions, 2544 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:18:20,447 INFO L231 Difference]: Finished difference. Result has 98 places, 124 transitions, 1109 flow [2023-11-06 22:18:20,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1109, PETRI_PLACES=98, PETRI_TRANSITIONS=124} [2023-11-06 22:18:20,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2023-11-06 22:18:20,448 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 124 transitions, 1109 flow [2023-11-06 22:18:20,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 288.6666666666667) internal successors, (3464), 12 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:20,450 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:20,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:20,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:18:20,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:20,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1979408272, now seen corresponding path program 1 times [2023-11-06 22:18:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:20,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108814243] [2023-11-06 22:18:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:18:20,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108814243] [2023-11-06 22:18:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108814243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423160827] [2023-11-06 22:18:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:20,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:20,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 623 [2023-11-06 22:18:20,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 124 transitions, 1109 flow. Second operand has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:20,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:20,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 623 [2023-11-06 22:18:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:22,889 INFO L124 PetriNetUnfolderBase]: 9107/13213 cut-off events. [2023-11-06 22:18:22,890 INFO L125 PetriNetUnfolderBase]: For 14789/14789 co-relation queries the response was YES. [2023-11-06 22:18:22,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37291 conditions, 13213 events. 9107/13213 cut-off events. For 14789/14789 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 72715 event pairs, 3042 based on Foata normal form. 218/12913 useless extension candidates. Maximal degree in co-relation 37252. Up to 6637 conditions per place. [2023-11-06 22:18:22,997 INFO L140 encePairwiseOnDemand]: 617/623 looper letters, 132 selfloop transitions, 28 changer transitions 10/170 dead transitions. [2023-11-06 22:18:22,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 1671 flow [2023-11-06 22:18:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1531 transitions. [2023-11-06 22:18:23,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914927768860353 [2023-11-06 22:18:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1531 transitions. [2023-11-06 22:18:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1531 transitions. [2023-11-06 22:18:23,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:23,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1531 transitions. [2023-11-06 22:18:23,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.2) internal successors, (1531), 5 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:23,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:23,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:23,019 INFO L175 Difference]: Start difference. First operand has 98 places, 124 transitions, 1109 flow. Second operand 5 states and 1531 transitions. [2023-11-06 22:18:23,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 1671 flow [2023-11-06 22:18:23,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 170 transitions, 1627 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:18:23,069 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 1118 flow [2023-11-06 22:18:23,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1118, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2023-11-06 22:18:23,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2023-11-06 22:18:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 1118 flow [2023-11-06 22:18:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:23,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:23,072 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 22:18:23,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:18:23,072 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:23,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:23,073 INFO L85 PathProgramCache]: Analyzing trace with hash -92105124, now seen corresponding path program 2 times [2023-11-06 22:18:23,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933794987] [2023-11-06 22:18:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:23,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933794987] [2023-11-06 22:18:23,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933794987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856450500] [2023-11-06 22:18:23,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:23,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:23,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:23,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:23,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:18:23,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:23,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:23,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:23,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:18:23,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856450500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:23,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 22:18:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750044642] [2023-11-06 22:18:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:23,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 623 [2023-11-06 22:18:23,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 1118 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:23,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:23,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 623 [2023-11-06 22:18:23,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:25,592 INFO L124 PetriNetUnfolderBase]: 9033/13054 cut-off events. [2023-11-06 22:18:25,593 INFO L125 PetriNetUnfolderBase]: For 16786/16786 co-relation queries the response was YES. [2023-11-06 22:18:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37982 conditions, 13054 events. 9033/13054 cut-off events. For 16786/16786 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 70071 event pairs, 6336 based on Foata normal form. 3/12539 useless extension candidates. Maximal degree in co-relation 37942. Up to 12998 conditions per place. [2023-11-06 22:18:25,704 INFO L140 encePairwiseOnDemand]: 620/623 looper letters, 99 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2023-11-06 22:18:25,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 121 transitions, 1305 flow [2023-11-06 22:18:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2023-11-06 22:18:25,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008025682182986 [2023-11-06 22:18:25,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2023-11-06 22:18:25,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2023-11-06 22:18:25,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:25,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2023-11-06 22:18:25,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,724 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,724 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 1118 flow. Second operand 4 states and 1248 transitions. [2023-11-06 22:18:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 121 transitions, 1305 flow [2023-11-06 22:18:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 1277 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:25,762 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1079 flow [2023-11-06 22:18:25,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1079, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2023-11-06 22:18:25,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2023-11-06 22:18:25,764 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1079 flow [2023-11-06 22:18:25,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:25,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:25,765 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:25,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:18:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:18:25,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:25,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2096958512, now seen corresponding path program 1 times [2023-11-06 22:18:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226611929] [2023-11-06 22:18:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:26,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:26,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226611929] [2023-11-06 22:18:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226611929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731393470] [2023-11-06 22:18:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:26,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:26,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:26,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:18:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:26,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:26,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:26,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:26,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731393470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:26,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:26,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-06 22:18:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474317170] [2023-11-06 22:18:26,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:18:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:18:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:18:27,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 623 [2023-11-06 22:18:27,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1079 flow. Second operand has 16 states, 16 states have (on average 286.125) internal successors, (4578), 16 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:27,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:27,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 623 [2023-11-06 22:18:27,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:30,916 INFO L124 PetriNetUnfolderBase]: 12729/18670 cut-off events. [2023-11-06 22:18:30,917 INFO L125 PetriNetUnfolderBase]: For 25499/25499 co-relation queries the response was YES. [2023-11-06 22:18:31,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52322 conditions, 18670 events. 12729/18670 cut-off events. For 25499/25499 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 110988 event pairs, 5058 based on Foata normal form. 786/19060 useless extension candidates. Maximal degree in co-relation 52281. Up to 3940 conditions per place. [2023-11-06 22:18:31,050 INFO L140 encePairwiseOnDemand]: 613/623 looper letters, 197 selfloop transitions, 78 changer transitions 101/376 dead transitions. [2023-11-06 22:18:31,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 376 transitions, 2990 flow [2023-11-06 22:18:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:18:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-06 22:18:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 7915 transitions. [2023-11-06 22:18:31,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705427739135604 [2023-11-06 22:18:31,072 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 7915 transitions. [2023-11-06 22:18:31,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 7915 transitions. [2023-11-06 22:18:31,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:31,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 7915 transitions. [2023-11-06 22:18:31,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 293.14814814814815) internal successors, (7915), 27 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 623.0) internal successors, (17444), 28 states have internal predecessors, (17444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,115 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 623.0) internal successors, (17444), 28 states have internal predecessors, (17444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,115 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1079 flow. Second operand 27 states and 7915 transitions. [2023-11-06 22:18:31,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 376 transitions, 2990 flow [2023-11-06 22:18:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 376 transitions, 2967 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:31,166 INFO L231 Difference]: Finished difference. Result has 129 places, 144 transitions, 1437 flow [2023-11-06 22:18:31,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1437, PETRI_PLACES=129, PETRI_TRANSITIONS=144} [2023-11-06 22:18:31,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2023-11-06 22:18:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 144 transitions, 1437 flow [2023-11-06 22:18:31,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 286.125) internal successors, (4578), 16 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:31,168 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-06 22:18:31,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:31,374 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:31,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 578763603, now seen corresponding path program 1 times [2023-11-06 22:18:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684084858] [2023-11-06 22:18:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684084858] [2023-11-06 22:18:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684084858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215434305] [2023-11-06 22:18:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:31,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:31,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:31,649 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:31,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:18:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:31,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:18:31,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:31,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215434305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:32,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:32,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 22:18:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65575919] [2023-11-06 22:18:32,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:18:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:18:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:18:32,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 623 [2023-11-06 22:18:32,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 144 transitions, 1437 flow. Second operand has 25 states, 25 states have (on average 301.12) internal successors, (7528), 25 states have internal predecessors, (7528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:32,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 623 [2023-11-06 22:18:32,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:35,216 INFO L124 PetriNetUnfolderBase]: 9937/14478 cut-off events. [2023-11-06 22:18:35,217 INFO L125 PetriNetUnfolderBase]: For 46833/46833 co-relation queries the response was YES. [2023-11-06 22:18:35,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46828 conditions, 14478 events. 9937/14478 cut-off events. For 46833/46833 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80773 event pairs, 6972 based on Foata normal form. 108/14190 useless extension candidates. Maximal degree in co-relation 46781. Up to 14113 conditions per place. [2023-11-06 22:18:35,348 INFO L140 encePairwiseOnDemand]: 615/623 looper letters, 45 selfloop transitions, 207 changer transitions 0/252 dead transitions. [2023-11-06 22:18:35,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 252 transitions, 2949 flow [2023-11-06 22:18:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:18:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:18:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7375 transitions. [2023-11-06 22:18:35,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4932450508293205 [2023-11-06 22:18:35,358 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7375 transitions. [2023-11-06 22:18:35,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7375 transitions. [2023-11-06 22:18:35,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:35,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7375 transitions. [2023-11-06 22:18:35,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 307.2916666666667) internal successors, (7375), 24 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 623.0) internal successors, (15575), 25 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,384 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 623.0) internal successors, (15575), 25 states have internal predecessors, (15575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,384 INFO L175 Difference]: Start difference. First operand has 129 places, 144 transitions, 1437 flow. Second operand 24 states and 7375 transitions. [2023-11-06 22:18:35,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 252 transitions, 2949 flow [2023-11-06 22:18:35,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 252 transitions, 2662 flow, removed 26 selfloop flow, removed 15 redundant places. [2023-11-06 22:18:35,465 INFO L231 Difference]: Finished difference. Result has 145 places, 252 transitions, 2872 flow [2023-11-06 22:18:35,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2872, PETRI_PLACES=145, PETRI_TRANSITIONS=252} [2023-11-06 22:18:35,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2023-11-06 22:18:35,467 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 252 transitions, 2872 flow [2023-11-06 22:18:35,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 301.12) internal successors, (7528), 25 states have internal predecessors, (7528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:35,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:35,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:35,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-06 22:18:35,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:35,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash -178239852, now seen corresponding path program 1 times [2023-11-06 22:18:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499256920] [2023-11-06 22:18:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:18:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499256920] [2023-11-06 22:18:36,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499256920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:36,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371348205] [2023-11-06 22:18:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:36,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:36,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:36,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:18:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:36,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:36,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:18:36,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:18:36,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371348205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:36,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:36,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:18:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097819776] [2023-11-06 22:18:36,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:36,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:36,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 623 [2023-11-06 22:18:36,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 252 transitions, 2872 flow. Second operand has 7 states, 7 states have (on average 318.42857142857144) internal successors, (2229), 7 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:36,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 623 [2023-11-06 22:18:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:41,348 INFO L124 PetriNetUnfolderBase]: 20905/30030 cut-off events. [2023-11-06 22:18:41,348 INFO L125 PetriNetUnfolderBase]: For 55386/55386 co-relation queries the response was YES. [2023-11-06 22:18:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89961 conditions, 30030 events. 20905/30030 cut-off events. For 55386/55386 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 183003 event pairs, 3433 based on Foata normal form. 858/30072 useless extension candidates. Maximal degree in co-relation 89909. Up to 7511 conditions per place. [2023-11-06 22:18:41,641 INFO L140 encePairwiseOnDemand]: 620/623 looper letters, 342 selfloop transitions, 5 changer transitions 0/347 dead transitions. [2023-11-06 22:18:41,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 347 transitions, 4026 flow [2023-11-06 22:18:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1980 transitions. [2023-11-06 22:18:41,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296950240770465 [2023-11-06 22:18:41,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1980 transitions. [2023-11-06 22:18:41,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1980 transitions. [2023-11-06 22:18:41,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:41,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1980 transitions. [2023-11-06 22:18:41,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,653 INFO L175 Difference]: Start difference. First operand has 145 places, 252 transitions, 2872 flow. Second operand 6 states and 1980 transitions. [2023-11-06 22:18:41,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 347 transitions, 4026 flow [2023-11-06 22:18:41,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 347 transitions, 3456 flow, removed 150 selfloop flow, removed 11 redundant places. [2023-11-06 22:18:41,727 INFO L231 Difference]: Finished difference. Result has 142 places, 255 transitions, 2338 flow [2023-11-06 22:18:41,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2338, PETRI_PLACES=142, PETRI_TRANSITIONS=255} [2023-11-06 22:18:41,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2023-11-06 22:18:41,728 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 255 transitions, 2338 flow [2023-11-06 22:18:41,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 318.42857142857144) internal successors, (2229), 7 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:41,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:41,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:41,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:18:41,933 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:41,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -474668709, now seen corresponding path program 2 times [2023-11-06 22:18:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789001986] [2023-11-06 22:18:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:18:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789001986] [2023-11-06 22:18:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789001986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330641555] [2023-11-06 22:18:42,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:42,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:42,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:42,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:42,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:18:42,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:42,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:42,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:42,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:18:42,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:18:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330641555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:42,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:42,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2023-11-06 22:18:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153007145] [2023-11-06 22:18:42,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:42,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:18:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:42,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:18:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:42,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 623 [2023-11-06 22:18:42,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 255 transitions, 2338 flow. Second operand has 10 states, 10 states have (on average 288.5) internal successors, (2885), 10 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:42,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:42,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 623 [2023-11-06 22:18:42,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:51,746 INFO L124 PetriNetUnfolderBase]: 31522/45651 cut-off events. [2023-11-06 22:18:51,747 INFO L125 PetriNetUnfolderBase]: For 103907/103907 co-relation queries the response was YES. [2023-11-06 22:18:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141543 conditions, 45651 events. 31522/45651 cut-off events. For 103907/103907 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 300613 event pairs, 14128 based on Foata normal form. 876/45735 useless extension candidates. Maximal degree in co-relation 141488. Up to 11935 conditions per place. [2023-11-06 22:18:52,186 INFO L140 encePairwiseOnDemand]: 611/623 looper letters, 492 selfloop transitions, 106 changer transitions 221/819 dead transitions. [2023-11-06 22:18:52,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 819 transitions, 8018 flow [2023-11-06 22:18:52,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:18:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:18:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5340 transitions. [2023-11-06 22:18:52,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-06 22:18:52,194 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5340 transitions. [2023-11-06 22:18:52,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5340 transitions. [2023-11-06 22:18:52,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:52,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5340 transitions. [2023-11-06 22:18:52,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 296.6666666666667) internal successors, (5340), 18 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:52,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 623.0) internal successors, (11837), 19 states have internal predecessors, (11837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:52,215 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 623.0) internal successors, (11837), 19 states have internal predecessors, (11837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:52,215 INFO L175 Difference]: Start difference. First operand has 142 places, 255 transitions, 2338 flow. Second operand 18 states and 5340 transitions. [2023-11-06 22:18:52,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 819 transitions, 8018 flow [2023-11-06 22:18:52,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 819 transitions, 7876 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-11-06 22:18:52,516 INFO L231 Difference]: Finished difference. Result has 153 places, 271 transitions, 2876 flow [2023-11-06 22:18:52,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2876, PETRI_PLACES=153, PETRI_TRANSITIONS=271} [2023-11-06 22:18:52,517 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2023-11-06 22:18:52,517 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 271 transitions, 2876 flow [2023-11-06 22:18:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 288.5) internal successors, (2885), 10 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:52,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:52,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:52,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:52,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:52,718 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:52,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:52,719 INFO L85 PathProgramCache]: Analyzing trace with hash -143041357, now seen corresponding path program 2 times [2023-11-06 22:18:52,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:52,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768630477] [2023-11-06 22:18:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:52,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:18:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768630477] [2023-11-06 22:18:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768630477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369629051] [2023-11-06 22:18:52,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:52,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:52,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:52,799 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:52,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:18:52,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:52,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:52,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:52,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:18:52,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:18:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369629051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:53,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 22:18:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778952181] [2023-11-06 22:18:53,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:18:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:18:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:53,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 623 [2023-11-06 22:18:53,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 271 transitions, 2876 flow. Second operand has 6 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:53,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:53,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 623 [2023-11-06 22:18:53,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:56,364 INFO L124 PetriNetUnfolderBase]: 13316/19319 cut-off events. [2023-11-06 22:18:56,365 INFO L125 PetriNetUnfolderBase]: For 56185/56185 co-relation queries the response was YES. [2023-11-06 22:18:56,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68372 conditions, 19319 events. 13316/19319 cut-off events. For 56185/56185 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 113115 event pairs, 2620 based on Foata normal form. 0/19319 useless extension candidates. Maximal degree in co-relation 68319. Up to 6108 conditions per place. [2023-11-06 22:18:56,561 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 158 selfloop transitions, 1 changer transitions 178/337 dead transitions. [2023-11-06 22:18:56,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 337 transitions, 3946 flow [2023-11-06 22:18:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1924 transitions. [2023-11-06 22:18:56,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147137506688069 [2023-11-06 22:18:56,566 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1924 transitions. [2023-11-06 22:18:56,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1924 transitions. [2023-11-06 22:18:56,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:56,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1924 transitions. [2023-11-06 22:18:56,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.6666666666667) internal successors, (1924), 6 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) [2023-11-06 22:18:56,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 623.0) internal successors, (4361), 7 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,576 INFO L175 Difference]: Start difference. First operand has 153 places, 271 transitions, 2876 flow. Second operand 6 states and 1924 transitions. [2023-11-06 22:18:56,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 337 transitions, 3946 flow [2023-11-06 22:18:56,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 337 transitions, 3822 flow, removed 41 selfloop flow, removed 11 redundant places. [2023-11-06 22:18:56,768 INFO L231 Difference]: Finished difference. Result has 134 places, 159 transitions, 1820 flow [2023-11-06 22:18:56,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1820, PETRI_PLACES=134, PETRI_TRANSITIONS=159} [2023-11-06 22:18:56,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2023-11-06 22:18:56,769 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 159 transitions, 1820 flow [2023-11-06 22:18:56,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:56,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:56,770 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-11-06 22:18:56,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:56,970 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:18:56,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -723929133, now seen corresponding path program 2 times [2023-11-06 22:18:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610890503] [2023-11-06 22:18:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:58,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610890503] [2023-11-06 22:18:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610890503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63552555] [2023-11-06 22:18:58,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:58,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:58,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:58,041 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:58,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:18:58,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:58,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:58,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:58,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:18:58,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:58,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63552555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2023-11-06 22:18:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573194125] [2023-11-06 22:18:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:18:58,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 623 [2023-11-06 22:18:58,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 1820 flow. Second operand has 4 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:58,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 623 [2023-11-06 22:18:58,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:58,543 INFO L124 PetriNetUnfolderBase]: 116/507 cut-off events. [2023-11-06 22:18:58,543 INFO L125 PetriNetUnfolderBase]: For 4353/4353 co-relation queries the response was YES. [2023-11-06 22:18:58,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 507 events. 116/507 cut-off events. For 4353/4353 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2764 event pairs, 0 based on Foata normal form. 12/519 useless extension candidates. Maximal degree in co-relation 2306. Up to 392 conditions per place. [2023-11-06 22:18:58,545 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2023-11-06 22:18:58,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 150 transitions, 1655 flow [2023-11-06 22:18:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1223 transitions. [2023-11-06 22:18:58,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907704654895666 [2023-11-06 22:18:58,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1223 transitions. [2023-11-06 22:18:58,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1223 transitions. [2023-11-06 22:18:58,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:58,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1223 transitions. [2023-11-06 22:18:58,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 623.0) internal successors, (3115), 5 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,557 INFO L175 Difference]: Start difference. First operand has 134 places, 159 transitions, 1820 flow. Second operand 4 states and 1223 transitions. [2023-11-06 22:18:58,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 150 transitions, 1655 flow [2023-11-06 22:18:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 150 transitions, 1256 flow, removed 3 selfloop flow, removed 31 redundant places. [2023-11-06 22:18:58,579 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2023-11-06 22:18:58,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2023-11-06 22:18:58,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-06 22:18:58,580 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2023-11-06 22:18:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-11-06 22:18:58,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-06 22:18:58,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-06 22:18:58,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-06 22:18:58,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-06 22:18:58,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-06 22:18:58,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-06 22:18:58,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-06 22:18:58,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-06 22:18:58,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-06 22:18:58,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-06 22:18:58,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-06 22:18:58,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-11-06 22:18:58,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-11-06 22:18:58,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 21 remaining) [2023-11-06 22:18:58,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-06 22:18:58,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-06 22:18:58,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-06 22:18:58,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-06 22:18:58,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-06 22:18:58,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-06 22:18:58,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:58,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:58,794 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:58,801 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:18:58,801 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:18:58,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:18:58 BasicIcfg [2023-11-06 22:18:58,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:18:58,807 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:18:58,807 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:18:58,808 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:18:58,809 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:46" (3/4) ... [2023-11-06 22:18:58,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:18:58,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:18:58,817 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:18:58,817 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:18:58,840 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-06 22:18:58,841 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:18:58,842 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:18:58,843 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:18:58,941 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:18:58,941 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:18:58,941 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:18:58,942 INFO L158 Benchmark]: Toolchain (without parser) took 74338.81ms. Allocated memory was 165.7MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 126.7MB in the beginning and 11.4GB in the end (delta: -11.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-06 22:18:58,943 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:18:58,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.24ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 129.2MB in the end (delta: -3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:58,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.45ms. Allocated memory is still 165.7MB. Free memory was 129.2MB in the beginning and 126.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:58,944 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 125.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:58,945 INFO L158 Benchmark]: RCFGBuilder took 877.13ms. Allocated memory is still 165.7MB. Free memory was 124.3MB in the beginning and 99.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:58,945 INFO L158 Benchmark]: TraceAbstraction took 72725.29ms. Allocated memory was 165.7MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 98.4MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-11-06 22:18:58,946 INFO L158 Benchmark]: Witness Printer took 134.52ms. Allocated memory is still 13.4GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:18:58,948 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.24ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 129.2MB in the end (delta: -3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.45ms. Allocated memory is still 165.7MB. Free memory was 129.2MB in the beginning and 126.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 125.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 877.13ms. Allocated memory is still 165.7MB. Free memory was 124.3MB in the beginning and 99.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 72725.29ms. Allocated memory was 165.7MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 98.4MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 134.52ms. Allocated memory is still 13.4GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.8s, 241 PlacesBefore, 41 PlacesAfterwards, 252 TransitionsBefore, 39 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 8 FixpointIterations, 166 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 14 ConcurrentYvCompositions, 13 ChoiceCompositions, 286 TotalNumberOfCompositions, 5968 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4629, independent: 4493, independent conditional: 0, independent unconditional: 4493, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2263, independent: 2235, independent conditional: 0, independent unconditional: 2235, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4629, independent: 2258, independent conditional: 0, independent unconditional: 2258, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 2263, unknown conditional: 0, unknown unconditional: 2263] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 118, Positive conditional cache size: 0, Positive unconditional cache size: 118, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: 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: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 365 locations, 21 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: 72.5s, OverallIterations: 24, TraceHistogramMax: 22, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 50.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6263 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4937 mSDsluCounter, 2829 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2002 mSDsCounter, 580 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8860 IncrementalHoareTripleChecker+Invalid, 9440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 580 mSolverCounterUnsat, 827 mSDtfsCounter, 8860 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 187 SyntacticMatches, 6 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2876occurred in iteration=22, InterpolantAutomatonStates: 182, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 410 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 1726 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2222 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 46 InterpolantComputations, 15 PerfectInterpolantSequences, 428/974 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:18:58,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e003fb-9cad-425b-a6f7-bb794460f4ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE