./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/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_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/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_83b0d40c-5371-4a49-9524-2c985ffff128/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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:57,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:57,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:17:57,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:57,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:57,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:57,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:57,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:57,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:57,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:57,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:57,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:57,506 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:57,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:57,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:57,508 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:57,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:57,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:57,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:57,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:57,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:57,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:57,511 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:17:57,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:57,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:57,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:57,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:57,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:57,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:57,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:57,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:57,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:57,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:57,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:57,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:57,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:57,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:57,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:57,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:57,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:57,518 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:57,518 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_83b0d40c-5371-4a49-9524-2c985ffff128/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2023-11-06 22:17:57,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:57,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:57,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:57,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:57,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:57,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-06 22:18:00,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:01,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:01,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-06 22:18:01,163 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/data/9000e7a8d/b268e7dc50ba4db788bb2e92468fd323/FLAG60aa2a30c [2023-11-06 22:18:01,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/data/9000e7a8d/b268e7dc50ba4db788bb2e92468fd323 [2023-11-06 22:18:01,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:01,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:01,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:01,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:01,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3386a531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01, skipping insertion in model container [2023-11-06 22:18:01,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:01,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,505 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:01,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,555 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:01,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01 WrapperNode [2023-11-06 22:18:01,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:01,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:01,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,614 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 351 [2023-11-06 22:18:01,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:01,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:01,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:01,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:01,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:01,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:01,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:18:01,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:18:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:18:01,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:18:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:18:01,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:18:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:01,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:01,768 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 22:18:01,907 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:01,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:02,576 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:02,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:02,593 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:18:02,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02 BoogieIcfgContainer [2023-11-06 22:18:02,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:02,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:02,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:02,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:02,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:01" (1/3) ... [2023-11-06 22:18:02,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27724b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (2/3) ... [2023-11-06 22:18:02,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27724b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02" (3/3) ... [2023-11-06 22:18:02,609 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-11-06 22:18:02,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:18:02,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:02,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-06 22:18:02,628 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:02,786 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:18:02,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 467 transitions, 955 flow [2023-11-06 22:18:03,065 INFO L124 PetriNetUnfolderBase]: 35/464 cut-off events. [2023-11-06 22:18:03,065 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:18:03,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 464 events. 35/464 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 346. Up to 3 conditions per place. [2023-11-06 22:18:03,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 442 places, 467 transitions, 955 flow [2023-11-06 22:18:03,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 432 transitions, 879 flow [2023-11-06 22:18:03,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:03,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 432 transitions, 879 flow [2023-11-06 22:18:03,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 432 transitions, 879 flow [2023-11-06 22:18:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 432 transitions, 879 flow [2023-11-06 22:18:03,221 INFO L124 PetriNetUnfolderBase]: 33/432 cut-off events. [2023-11-06 22:18:03,222 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:18:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 432 events. 33/432 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 978 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 346. Up to 3 conditions per place. [2023-11-06 22:18:03,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 44160 [2023-11-06 22:18:25,720 INFO L134 LiptonReduction]: Checked pairs total: 56863 [2023-11-06 22:18:25,721 INFO L136 LiptonReduction]: Total number of compositions: 547 [2023-11-06 22:18:25,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:25,745 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;@b276034, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:25,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-06 22:18:25,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:25,748 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:18:25,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:25,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:25,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:18:25,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:25,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 60234, now seen corresponding path program 1 times [2023-11-06 22:18:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298001406] [2023-11-06 22:18:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:25,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:26,153 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 22:18:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298001406] [2023-11-06 22:18:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298001406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973127565] [2023-11-06 22:18:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:26,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1014 [2023-11-06 22:18:26,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:26,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:26,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1014 [2023-11-06 22:18:26,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:28,986 INFO L124 PetriNetUnfolderBase]: 12933/18008 cut-off events. [2023-11-06 22:18:28,987 INFO L125 PetriNetUnfolderBase]: For 625/625 co-relation queries the response was YES. [2023-11-06 22:18:29,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36608 conditions, 18008 events. 12933/18008 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 97813 event pairs, 11113 based on Foata normal form. 0/7238 useless extension candidates. Maximal degree in co-relation 34416. Up to 18004 conditions per place. [2023-11-06 22:18:29,183 INFO L140 encePairwiseOnDemand]: 995/1014 looper letters, 63 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-06 22:18:29,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 295 flow [2023-11-06 22:18:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1357 transitions. [2023-11-06 22:18:29,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460880999342538 [2023-11-06 22:18:29,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1357 transitions. [2023-11-06 22:18:29,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1357 transitions. [2023-11-06 22:18:29,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:29,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1357 transitions. [2023-11-06 22:18:29,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,238 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1357 transitions. [2023-11-06 22:18:29,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 295 flow [2023-11-06 22:18:29,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:18:29,260 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 198 flow [2023-11-06 22:18:29,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-06 22:18:29,266 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-06 22:18:29,266 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 198 flow [2023-11-06 22:18:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:29,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:18:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:29,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:29,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1870200, now seen corresponding path program 1 times [2023-11-06 22:18:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125609031] [2023-11-06 22:18:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:29,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:29,366 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 22:18:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125609031] [2023-11-06 22:18:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125609031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562624101] [2023-11-06 22:18:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:29,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:29,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:29,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:18:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:29,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:29,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:29,582 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 22:18:29,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:29,606 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 22:18:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562624101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:29,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:29,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:18:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366717069] [2023-11-06 22:18:29,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:29,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1014 [2023-11-06 22:18:29,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 426.14285714285717) internal successors, (2983), 7 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:29,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:29,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1014 [2023-11-06 22:18:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:32,423 INFO L124 PetriNetUnfolderBase]: 12951/18035 cut-off events. [2023-11-06 22:18:32,424 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-06 22:18:32,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36540 conditions, 18035 events. 12951/18035 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 98027 event pairs, 11113 based on Foata normal form. 0/7257 useless extension candidates. Maximal degree in co-relation 36385. Up to 18004 conditions per place. [2023-11-06 22:18:32,553 INFO L140 encePairwiseOnDemand]: 1001/1014 looper letters, 60 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2023-11-06 22:18:32,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 97 transitions, 512 flow [2023-11-06 22:18:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:18:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:18:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3081 transitions. [2023-11-06 22:18:32,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2023-11-06 22:18:32,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3081 transitions. [2023-11-06 22:18:32,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3081 transitions. [2023-11-06 22:18:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3081 transitions. [2023-11-06 22:18:32,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 440.14285714285717) internal successors, (3081), 7 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1014.0) internal successors, (8112), 8 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1014.0) internal successors, (8112), 8 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,608 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 198 flow. Second operand 7 states and 3081 transitions. [2023-11-06 22:18:32,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 97 transitions, 512 flow [2023-11-06 22:18:32,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:32,615 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 428 flow [2023-11-06 22:18:32,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-11-06 22:18:32,616 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-06 22:18:32,616 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 428 flow [2023-11-06 22:18:32,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 426.14285714285717) internal successors, (2983), 7 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:32,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:18:32,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:32,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:32,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:32,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 57979145, now seen corresponding path program 1 times [2023-11-06 22:18:32,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:32,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609002932] [2023-11-06 22:18:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:32,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609002932] [2023-11-06 22:18:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609002932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006833196] [2023-11-06 22:18:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:32,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:32,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:32,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1014 [2023-11-06 22:18:32,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:32,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1014 [2023-11-06 22:18:32,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:35,702 INFO L124 PetriNetUnfolderBase]: 12942/18023 cut-off events. [2023-11-06 22:18:35,702 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-06 22:18:35,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36550 conditions, 18023 events. 12942/18023 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 98056 event pairs, 11113 based on Foata normal form. 0/7259 useless extension candidates. Maximal degree in co-relation 36456. Up to 17995 conditions per place. [2023-11-06 22:18:35,848 INFO L140 encePairwiseOnDemand]: 1009/1014 looper letters, 79 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2023-11-06 22:18:35,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 517 flow [2023-11-06 22:18:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-11-06 22:18:35,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2023-11-06 22:18:35,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-11-06 22:18:35,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-11-06 22:18:35,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:35,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-11-06 22:18:35,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,877 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 428 flow. Second operand 3 states and 1339 transitions. [2023-11-06 22:18:35,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 517 flow [2023-11-06 22:18:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 480 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:35,883 INFO L231 Difference]: Finished difference. Result has 69 places, 85 transitions, 322 flow [2023-11-06 22:18:35,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=69, PETRI_TRANSITIONS=85} [2023-11-06 22:18:35,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-06 22:18:35,885 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 85 transitions, 322 flow [2023-11-06 22:18:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:35,887 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:18:35,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:35,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:35,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -116521270, now seen corresponding path program 2 times [2023-11-06 22:18:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119799429] [2023-11-06 22:18:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:35,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:36,012 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 22:18:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119799429] [2023-11-06 22:18:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119799429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324246845] [2023-11-06 22:18:36,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:18:36,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:36,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:36,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:18:36,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:18:36,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:36,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:36,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:36,163 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 22:18:36,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324246845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:36,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:36,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:18:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959709185] [2023-11-06 22:18:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:36,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:36,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:36,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 1014 [2023-11-06 22:18:36,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 85 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:36,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 1014 [2023-11-06 22:18:36,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:38,282 INFO L124 PetriNetUnfolderBase]: 12942/18022 cut-off events. [2023-11-06 22:18:38,282 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-06 22:18:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36530 conditions, 18022 events. 12942/18022 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 98057 event pairs, 11113 based on Foata normal form. 1/7263 useless extension candidates. Maximal degree in co-relation 36450. Up to 18017 conditions per place. [2023-11-06 22:18:38,385 INFO L140 encePairwiseOnDemand]: 1011/1014 looper letters, 78 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2023-11-06 22:18:38,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 480 flow [2023-11-06 22:18:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1354 transitions. [2023-11-06 22:18:38,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451019066403682 [2023-11-06 22:18:38,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1354 transitions. [2023-11-06 22:18:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1354 transitions. [2023-11-06 22:18:38,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:38,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1354 transitions. [2023-11-06 22:18:38,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,409 INFO L175 Difference]: Start difference. First operand has 69 places, 85 transitions, 322 flow. Second operand 3 states and 1354 transitions. [2023-11-06 22:18:38,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 480 flow [2023-11-06 22:18:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:38,413 INFO L231 Difference]: Finished difference. Result has 68 places, 84 transitions, 312 flow [2023-11-06 22:18:38,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=84} [2023-11-06 22:18:38,414 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-06 22:18:38,414 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 84 transitions, 312 flow [2023-11-06 22:18:38,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:38,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:18:38,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:38,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:38,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:38,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -25132809, now seen corresponding path program 1 times [2023-11-06 22:18:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321441330] [2023-11-06 22:18:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:38,824 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 22:18:38,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321441330] [2023-11-06 22:18:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321441330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:38,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900175447] [2023-11-06 22:18:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:38,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:38,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 1014 [2023-11-06 22:18:38,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 84 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 420.5) internal successors, (1682), 4 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:38,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 1014 [2023-11-06 22:18:38,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:43,307 INFO L124 PetriNetUnfolderBase]: 24513/33993 cut-off events. [2023-11-06 22:18:43,307 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-06 22:18:43,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68871 conditions, 33993 events. 24513/33993 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 199505 event pairs, 20674 based on Foata normal form. 0/13793 useless extension candidates. Maximal degree in co-relation 68740. Up to 17160 conditions per place. [2023-11-06 22:18:43,504 INFO L140 encePairwiseOnDemand]: 1006/1014 looper letters, 151 selfloop transitions, 7 changer transitions 0/158 dead transitions. [2023-11-06 22:18:43,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 876 flow [2023-11-06 22:18:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:18:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2218 transitions. [2023-11-06 22:18:43,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43747534516765285 [2023-11-06 22:18:43,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2218 transitions. [2023-11-06 22:18:43,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2218 transitions. [2023-11-06 22:18:43,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:43,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2218 transitions. [2023-11-06 22:18:43,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 443.6) internal successors, (2218), 5 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,539 INFO L175 Difference]: Start difference. First operand has 68 places, 84 transitions, 312 flow. Second operand 5 states and 2218 transitions. [2023-11-06 22:18:43,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 876 flow [2023-11-06 22:18:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 158 transitions, 864 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:43,545 INFO L231 Difference]: Finished difference. Result has 73 places, 88 transitions, 354 flow [2023-11-06 22:18:43,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=73, PETRI_TRANSITIONS=88} [2023-11-06 22:18:43,548 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-11-06 22:18:43,548 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 88 transitions, 354 flow [2023-11-06 22:18:43,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 420.5) internal successors, (1682), 4 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:43,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:43,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:43,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:43,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 774199249, now seen corresponding path program 1 times [2023-11-06 22:18:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831697589] [2023-11-06 22:18:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:43,731 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 22:18:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831697589] [2023-11-06 22:18:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831697589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767846730] [2023-11-06 22:18:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:43,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:43,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:18:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:43,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:43,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:43,951 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 22:18:43,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:43,999 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 22:18:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767846730] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:44,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:44,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-11-06 22:18:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611412306] [2023-11-06 22:18:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:44,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1014 [2023-11-06 22:18:44,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 88 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 410.75) internal successors, (1643), 4 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:44,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:44,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1014 [2023-11-06 22:18:44,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:48,107 INFO L124 PetriNetUnfolderBase]: 23323/32465 cut-off events. [2023-11-06 22:18:48,107 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2023-11-06 22:18:48,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66135 conditions, 32465 events. 23323/32465 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 190303 event pairs, 19898 based on Foata normal form. 676/14446 useless extension candidates. Maximal degree in co-relation 66004. Up to 32465 conditions per place. [2023-11-06 22:18:48,493 INFO L140 encePairwiseOnDemand]: 1012/1014 looper letters, 85 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-11-06 22:18:48,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 516 flow [2023-11-06 22:18:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2023-11-06 22:18:48,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2023-11-06 22:18:48,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2023-11-06 22:18:48,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2023-11-06 22:18:48,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:48,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2023-11-06 22:18:48,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,541 INFO L175 Difference]: Start difference. First operand has 73 places, 88 transitions, 354 flow. Second operand 3 states and 1287 transitions. [2023-11-06 22:18:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 86 transitions, 516 flow [2023-11-06 22:18:48,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 508 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:48,546 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 338 flow [2023-11-06 22:18:48,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-11-06 22:18:48,550 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-06 22:18:48,551 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 338 flow [2023-11-06 22:18:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 410.75) internal successors, (1643), 4 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:48,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:48,553 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:18:48,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:48,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:48,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -851351925, now seen corresponding path program 1 times [2023-11-06 22:18:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786491010] [2023-11-06 22:18:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:48,886 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 22:18:48,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786491010] [2023-11-06 22:18:48,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786491010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:48,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322074606] [2023-11-06 22:18:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:48,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:18:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:49,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:18:49,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:49,034 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 22:18:49,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:49,093 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 22:18:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322074606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:49,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:49,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:18:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546820621] [2023-11-06 22:18:49,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:18:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:18:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:49,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1014 [2023-11-06 22:18:49,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 338 flow. Second operand has 13 states, 13 states have (on average 426.15384615384613) internal successors, (5540), 13 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:49,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1014 [2023-11-06 22:18:49,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:53,285 INFO L124 PetriNetUnfolderBase]: 23353/32525 cut-off events. [2023-11-06 22:18:53,285 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2023-11-06 22:18:53,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66354 conditions, 32525 events. 23353/32525 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 190717 event pairs, 19898 based on Foata normal form. 24/13824 useless extension candidates. Maximal degree in co-relation 66339. Up to 32446 conditions per place. [2023-11-06 22:18:53,431 INFO L140 encePairwiseOnDemand]: 1005/1014 looper letters, 58 selfloop transitions, 64 changer transitions 0/122 dead transitions. [2023-11-06 22:18:53,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 786 flow [2023-11-06 22:18:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:18:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:18:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5231 transitions. [2023-11-06 22:18:53,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298980933596318 [2023-11-06 22:18:53,450 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5231 transitions. [2023-11-06 22:18:53,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5231 transitions. [2023-11-06 22:18:53,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:53,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5231 transitions. [2023-11-06 22:18:53,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 435.9166666666667) internal successors, (5231), 12 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:53,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1014.0) internal successors, (13182), 13 states have internal predecessors, (13182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:53,494 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1014.0) internal successors, (13182), 13 states have internal predecessors, (13182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:53,494 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 338 flow. Second operand 12 states and 5231 transitions. [2023-11-06 22:18:53,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 786 flow [2023-11-06 22:18:53,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:53,500 INFO L231 Difference]: Finished difference. Result has 88 places, 122 transitions, 755 flow [2023-11-06 22:18:53,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=755, PETRI_PLACES=88, PETRI_TRANSITIONS=122} [2023-11-06 22:18:53,501 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2023-11-06 22:18:53,501 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 122 transitions, 755 flow [2023-11-06 22:18:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 426.15384615384613) internal successors, (5540), 13 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:53,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:53,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:53,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:53,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:18:53,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:53,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 774199333, now seen corresponding path program 1 times [2023-11-06 22:18:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:53,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844679641] [2023-11-06 22:18:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:53,860 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 22:18:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844679641] [2023-11-06 22:18:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844679641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590706552] [2023-11-06 22:18:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:53,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:53,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:53,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:18:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:53,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:18:53,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:54,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:54,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590706552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:18:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464165050] [2023-11-06 22:18:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:54,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1014 [2023-11-06 22:18:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 122 transitions, 755 flow. Second operand has 4 states, 4 states have (on average 436.75) internal successors, (1747), 4 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:54,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:54,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1014 [2023-11-06 22:18:54,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:57,930 INFO L124 PetriNetUnfolderBase]: 22501/31335 cut-off events. [2023-11-06 22:18:57,930 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2023-11-06 22:18:58,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63807 conditions, 31335 events. 22501/31335 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 182977 event pairs, 19122 based on Foata normal form. 338/13467 useless extension candidates. Maximal degree in co-relation 63785. Up to 31323 conditions per place. [2023-11-06 22:18:58,122 INFO L140 encePairwiseOnDemand]: 1011/1014 looper letters, 109 selfloop transitions, 12 changer transitions 0/121 dead transitions. [2023-11-06 22:18:58,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 993 flow [2023-11-06 22:18:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:18:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1799 transitions. [2023-11-06 22:18:58,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435404339250493 [2023-11-06 22:18:58,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1799 transitions. [2023-11-06 22:18:58,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1799 transitions. [2023-11-06 22:18:58,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:58,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1799 transitions. [2023-11-06 22:18:58,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 449.75) internal successors, (1799), 4 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1014.0) internal successors, (5070), 5 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,146 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1014.0) internal successors, (5070), 5 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,146 INFO L175 Difference]: Start difference. First operand has 88 places, 122 transitions, 755 flow. Second operand 4 states and 1799 transitions. [2023-11-06 22:18:58,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 993 flow [2023-11-06 22:18:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 806 flow, removed 52 selfloop flow, removed 6 redundant places. [2023-11-06 22:18:58,153 INFO L231 Difference]: Finished difference. Result has 84 places, 121 transitions, 588 flow [2023-11-06 22:18:58,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2023-11-06 22:18:58,155 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-11-06 22:18:58,155 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 588 flow [2023-11-06 22:18:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.75) internal successors, (1747), 4 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:58,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:58,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b0d40c-5371-4a49-9524-2c985ffff128/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:18:58,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:18:58,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1617341384, now seen corresponding path program 1 times [2023-11-06 22:18:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219445099] [2023-11-06 22:18:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,417 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 22:18:58,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219445099] [2023-11-06 22:18:58,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219445099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:58,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:58,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588453196] [2023-11-06 22:18:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:58,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 1014 [2023-11-06 22:18:58,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 588 flow. Second operand has 3 states, 3 states have (on average 440.6666666666667) internal successors, (1322), 3 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:58,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 1014 [2023-11-06 22:18:58,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:04,976 INFO L124 PetriNetUnfolderBase]: 39833/55411 cut-off events. [2023-11-06 22:19:04,976 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-06 22:19:05,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112340 conditions, 55411 events. 39833/55411 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 2178. Compared 358468 event pairs, 19122 based on Foata normal form. 0/23317 useless extension candidates. Maximal degree in co-relation 112319. Up to 31336 conditions per place. [2023-11-06 22:19:05,322 INFO L140 encePairwiseOnDemand]: 1010/1014 looper letters, 164 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-06 22:19:05,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1015 flow [2023-11-06 22:19:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:19:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1419 transitions. [2023-11-06 22:19:05,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646942800788954 [2023-11-06 22:19:05,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1419 transitions. [2023-11-06 22:19:05,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1419 transitions. [2023-11-06 22:19:05,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:05,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1419 transitions. [2023-11-06 22:19:05,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,341 INFO L175 Difference]: Start difference. First operand has 84 places, 121 transitions, 588 flow. Second operand 3 states and 1419 transitions. [2023-11-06 22:19:05,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1015 flow [2023-11-06 22:19:05,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 166 transitions, 1002 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:19:05,348 INFO L231 Difference]: Finished difference. Result has 85 places, 122 transitions, 589 flow [2023-11-06 22:19:05,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=589, PETRI_PLACES=85, PETRI_TRANSITIONS=122} [2023-11-06 22:19:05,350 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-11-06 22:19:05,350 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 122 transitions, 589 flow [2023-11-06 22:19:05,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 440.6666666666667) internal successors, (1322), 3 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:05,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:19:05,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:19:05,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1617285081, now seen corresponding path program 1 times [2023-11-06 22:19:05,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416535054] [2023-11-06 22:19:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,443 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 22:19:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:05,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416535054] [2023-11-06 22:19:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416535054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955685317] [2023-11-06 22:19:05,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:05,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:05,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1014 [2023-11-06 22:19:05,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 122 transitions, 589 flow. Second operand has 5 states, 5 states have (on average 416.6) internal successors, (2083), 5 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:05,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1014 [2023-11-06 22:19:05,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand