./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:33,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:33,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:53:33,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:33,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:33,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:33,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:33,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:33,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:33,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:33,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:33,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:33,631 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:33,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:33,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:53:33,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:33,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:33,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:33,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:33,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:53:33,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:33,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:53:33,637 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:53:33,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:33,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:33,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:53:33,639 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:33,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:33,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:33,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:33,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:33,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:33,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:33,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:53:33,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:33,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:33,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:33,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:53:33,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:33,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:33,658 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:33,658 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_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2023-11-19 07:53:33,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:33,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:33,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:33,950 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:33,950 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:33,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-19 07:53:37,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:37,238 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:37,239 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-19 07:53:37,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/data/98e502805/e7042aed0940402fb9ca3b3b5fb16028/FLAGa07adcafe [2023-11-19 07:53:37,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/data/98e502805/e7042aed0940402fb9ca3b3b5fb16028 [2023-11-19 07:53:37,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:37,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:37,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:37,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:37,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:37,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab77436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:37,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:37,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:37,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:37,674 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:37,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37 WrapperNode [2023-11-19 07:53:37,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:37,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:37,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:37,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:37,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,739 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 123 [2023-11-19 07:53:37,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:37,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:37,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:37,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:37,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:37,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:37,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:37,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:37,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:37,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:37,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:53:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:53:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:53:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:53:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:53:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:53:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:37,889 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:53:38,065 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:38,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:38,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:38,508 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:38,508 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:53:38,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38 BoogieIcfgContainer [2023-11-19 07:53:38,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:38,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:38,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:38,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:38,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:37" (1/3) ... [2023-11-19 07:53:38,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container [2023-11-19 07:53:38,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (2/3) ... [2023-11-19 07:53:38,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container [2023-11-19 07:53:38,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38" (3/3) ... [2023-11-19 07:53:38,525 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-11-19 07:53:38,535 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:53:38,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:38,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:53:38,548 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:38,632 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:53:38,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 196 transitions, 406 flow [2023-11-19 07:53:38,772 INFO L124 PetriNetUnfolderBase]: 15/194 cut-off events. [2023-11-19 07:53:38,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:53:38,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 15/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2023-11-19 07:53:38,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 196 transitions, 406 flow [2023-11-19 07:53:38,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 172 transitions, 353 flow [2023-11-19 07:53:38,792 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:38,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 172 transitions, 353 flow [2023-11-19 07:53:38,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 172 transitions, 353 flow [2023-11-19 07:53:38,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 353 flow [2023-11-19 07:53:38,890 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-19 07:53:38,890 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:38,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 176 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2023-11-19 07:53:38,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-11-19 07:53:45,788 INFO L134 LiptonReduction]: Checked pairs total: 2110 [2023-11-19 07:53:45,788 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-19 07:53:45,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:45,813 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58ccba4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:45,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-19 07:53:45,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:45,815 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:53:45,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:45,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:45,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:53:45,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 23029, now seen corresponding path program 1 times [2023-11-19 07:53:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:45,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603062647] [2023-11-19 07:53:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:46,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603062647] [2023-11-19 07:53:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603062647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:46,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:46,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842494941] [2023-11-19 07:53:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:46,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 382 [2023-11-19 07:53:46,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:46,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 382 [2023-11-19 07:53:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:46,372 INFO L124 PetriNetUnfolderBase]: 163/254 cut-off events. [2023-11-19 07:53:46,372 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-19 07:53:46,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 254 events. 163/254 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 893 event pairs, 78 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 436. Up to 248 conditions per place. [2023-11-19 07:53:46,377 INFO L140 encePairwiseOnDemand]: 373/382 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-11-19 07:53:46,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 129 flow [2023-11-19 07:53:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2023-11-19 07:53:46,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790575916230366 [2023-11-19 07:53:46,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2023-11-19 07:53:46,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2023-11-19 07:53:46,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:46,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2023-11-19 07:53:46,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,421 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 63 flow. Second operand 3 states and 549 transitions. [2023-11-19 07:53:46,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 129 flow [2023-11-19 07:53:46,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:46,427 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 102 flow [2023-11-19 07:53:46,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2023-11-19 07:53:46,433 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-19 07:53:46,434 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 102 flow [2023-11-19 07:53:46,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:46,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:53:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:53:46,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 714795, now seen corresponding path program 1 times [2023-11-19 07:53:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717905111] [2023-11-19 07:53:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717905111] [2023-11-19 07:53:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717905111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282396563] [2023-11-19 07:53:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:46,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:46,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:46,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:53:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:46,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:53:46,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:46,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282396563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:46,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:53:46,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192297145] [2023-11-19 07:53:46,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:46,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:53:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:53:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:53:46,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 382 [2023-11-19 07:53:46,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:46,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:46,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 382 [2023-11-19 07:53:46,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:46,984 INFO L124 PetriNetUnfolderBase]: 175/272 cut-off events. [2023-11-19 07:53:46,985 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:46,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 272 events. 175/272 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 950 event pairs, 78 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 491. Up to 249 conditions per place. [2023-11-19 07:53:46,992 INFO L140 encePairwiseOnDemand]: 373/382 looper letters, 22 selfloop transitions, 25 changer transitions 0/49 dead transitions. [2023-11-19 07:53:46,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 274 flow [2023-11-19 07:53:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:53:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:53:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1257 transitions. [2023-11-19 07:53:47,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700822737471952 [2023-11-19 07:53:47,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1257 transitions. [2023-11-19 07:53:47,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1257 transitions. [2023-11-19 07:53:47,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1257 transitions. [2023-11-19 07:53:47,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.57142857142858) internal successors, (1257), 7 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 382.0) internal successors, (3056), 8 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 382.0) internal successors, (3056), 8 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,029 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 102 flow. Second operand 7 states and 1257 transitions. [2023-11-19 07:53:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 274 flow [2023-11-19 07:53:47,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:47,033 INFO L231 Difference]: Finished difference. Result has 37 places, 49 transitions, 256 flow [2023-11-19 07:53:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=37, PETRI_TRANSITIONS=49} [2023-11-19 07:53:47,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-19 07:53:47,035 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 49 transitions, 256 flow [2023-11-19 07:53:47,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:53:47,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:53:47,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:47,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:47,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 22159509, now seen corresponding path program 1 times [2023-11-19 07:53:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713984077] [2023-11-19 07:53:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713984077] [2023-11-19 07:53:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713984077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356237617] [2023-11-19 07:53:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:47,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 382 [2023-11-19 07:53:47,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 49 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 382 [2023-11-19 07:53:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:47,519 INFO L124 PetriNetUnfolderBase]: 169/264 cut-off events. [2023-11-19 07:53:47,520 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:53:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 264 events. 169/264 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 923 event pairs, 78 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 540. Up to 243 conditions per place. [2023-11-19 07:53:47,523 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-11-19 07:53:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 280 flow [2023-11-19 07:53:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-19 07:53:47,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720767888307155 [2023-11-19 07:53:47,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-19 07:53:47,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-19 07:53:47,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-19 07:53:47,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,535 INFO L175 Difference]: Start difference. First operand has 37 places, 49 transitions, 256 flow. Second operand 3 states and 541 transitions. [2023-11-19 07:53:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 280 flow [2023-11-19 07:53:47,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 254 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:47,542 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 188 flow [2023-11-19 07:53:47,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=35, PETRI_TRANSITIONS=41} [2023-11-19 07:53:47,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-11-19 07:53:47,544 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 188 flow [2023-11-19 07:53:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,545 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:53:47,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:53:47,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -179519690, now seen corresponding path program 2 times [2023-11-19 07:53:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396139116] [2023-11-19 07:53:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:47,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396139116] [2023-11-19 07:53:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396139116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097706458] [2023-11-19 07:53:47,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:47,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:47,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:47,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:53:47,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:53:47,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:47,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:53:47,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:53:47,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:47,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097706458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:47,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:53:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934410495] [2023-11-19 07:53:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:53:47,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 382 [2023-11-19 07:53:47,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:47,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 382 [2023-11-19 07:53:47,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:47,987 INFO L124 PetriNetUnfolderBase]: 169/263 cut-off events. [2023-11-19 07:53:47,988 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:53:47,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 263 events. 169/263 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 932 event pairs, 78 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 537. Up to 254 conditions per place. [2023-11-19 07:53:47,992 INFO L140 encePairwiseOnDemand]: 379/382 looper letters, 32 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-11-19 07:53:47,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 254 flow [2023-11-19 07:53:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2023-11-19 07:53:47,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48080279232111695 [2023-11-19 07:53:47,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2023-11-19 07:53:47,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2023-11-19 07:53:47,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2023-11-19 07:53:48,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,007 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 188 flow. Second operand 3 states and 551 transitions. [2023-11-19 07:53:48,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 254 flow [2023-11-19 07:53:48,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:48,010 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 178 flow [2023-11-19 07:53:48,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2023-11-19 07:53:48,011 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2023-11-19 07:53:48,011 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 178 flow [2023-11-19 07:53:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:48,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:48,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1170535003, now seen corresponding path program 1 times [2023-11-19 07:53:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808478660] [2023-11-19 07:53:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808478660] [2023-11-19 07:53:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808478660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:48,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525841663] [2023-11-19 07:53:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:48,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:48,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 382 [2023-11-19 07:53:48,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:48,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 382 [2023-11-19 07:53:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:48,415 INFO L124 PetriNetUnfolderBase]: 235/364 cut-off events. [2023-11-19 07:53:48,415 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:53:48,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 364 events. 235/364 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1380 event pairs, 41 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 743. Up to 225 conditions per place. [2023-11-19 07:53:48,422 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 49 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-19 07:53:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 309 flow [2023-11-19 07:53:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2023-11-19 07:53:48,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034904013961605 [2023-11-19 07:53:48,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2023-11-19 07:53:48,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2023-11-19 07:53:48,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:48,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2023-11-19 07:53:48,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,435 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 178 flow. Second operand 3 states and 577 transitions. [2023-11-19 07:53:48,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 309 flow [2023-11-19 07:53:48,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:48,440 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 180 flow [2023-11-19 07:53:48,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=35, PETRI_TRANSITIONS=41} [2023-11-19 07:53:48,443 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-11-19 07:53:48,444 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 180 flow [2023-11-19 07:53:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:48,449 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 07:53:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:53:48,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:48,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1163260060, now seen corresponding path program 1 times [2023-11-19 07:53:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:48,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965768061] [2023-11-19 07:53:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965768061] [2023-11-19 07:53:48,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965768061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44004302] [2023-11-19 07:53:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:48,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:48,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:48,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:53:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:53:48,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44004302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:48,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:53:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077758943] [2023-11-19 07:53:48,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:53:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:53:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:53:48,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 382 [2023-11-19 07:53:48,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 180 flow. Second operand has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:48,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:48,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 382 [2023-11-19 07:53:48,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,067 INFO L124 PetriNetUnfolderBase]: 247/388 cut-off events. [2023-11-19 07:53:49,067 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:53:49,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 388 events. 247/388 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1561 event pairs, 119 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 798. Up to 355 conditions per place. [2023-11-19 07:53:49,071 INFO L140 encePairwiseOnDemand]: 376/382 looper letters, 22 selfloop transitions, 41 changer transitions 0/65 dead transitions. [2023-11-19 07:53:49,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 444 flow [2023-11-19 07:53:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:53:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:53:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2132 transitions. [2023-11-19 07:53:49,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650959860383944 [2023-11-19 07:53:49,080 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2132 transitions. [2023-11-19 07:53:49,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2132 transitions. [2023-11-19 07:53:49,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2132 transitions. [2023-11-19 07:53:49,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 382.0) internal successors, (4966), 13 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,100 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 382.0) internal successors, (4966), 13 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,100 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 180 flow. Second operand 12 states and 2132 transitions. [2023-11-19 07:53:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 444 flow [2023-11-19 07:53:49,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:49,104 INFO L231 Difference]: Finished difference. Result has 51 places, 65 transitions, 452 flow [2023-11-19 07:53:49,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=51, PETRI_TRANSITIONS=65} [2023-11-19 07:53:49,105 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-19 07:53:49,105 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 65 transitions, 452 flow [2023-11-19 07:53:49,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:49,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:49,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:49,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:53:49,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:49,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1921118307, now seen corresponding path program 1 times [2023-11-19 07:53:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579550934] [2023-11-19 07:53:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:49,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:49,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579550934] [2023-11-19 07:53:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579550934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:49,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061742423] [2023-11-19 07:53:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:49,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:49,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 382 [2023-11-19 07:53:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 65 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 382 [2023-11-19 07:53:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,536 INFO L124 PetriNetUnfolderBase]: 235/399 cut-off events. [2023-11-19 07:53:49,536 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 07:53:49,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 399 events. 235/399 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1629 event pairs, 47 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 961. Up to 229 conditions per place. [2023-11-19 07:53:49,540 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 73 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-19 07:53:49,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 635 flow [2023-11-19 07:53:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-19 07:53:49,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017452006980803 [2023-11-19 07:53:49,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-19 07:53:49,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-19 07:53:49,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-19 07:53:49,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,551 INFO L175 Difference]: Start difference. First operand has 51 places, 65 transitions, 452 flow. Second operand 3 states and 575 transitions. [2023-11-19 07:53:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 635 flow [2023-11-19 07:53:49,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 511 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-19 07:53:49,558 INFO L231 Difference]: Finished difference. Result has 49 places, 66 transitions, 342 flow [2023-11-19 07:53:49,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=49, PETRI_TRANSITIONS=66} [2023-11-19 07:53:49,559 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-11-19 07:53:49,559 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 66 transitions, 342 flow [2023-11-19 07:53:49,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:49,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:49,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:53:49,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:49,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash 574875330, now seen corresponding path program 1 times [2023-11-19 07:53:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802553041] [2023-11-19 07:53:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:49,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:49,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802553041] [2023-11-19 07:53:49,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802553041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:49,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:53:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174737048] [2023-11-19 07:53:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:53:49,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 382 [2023-11-19 07:53:49,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 66 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:49,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 382 [2023-11-19 07:53:49,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,974 INFO L124 PetriNetUnfolderBase]: 310/547 cut-off events. [2023-11-19 07:53:49,975 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-19 07:53:49,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 547 events. 310/547 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2447 event pairs, 198 based on Foata normal form. 17/435 useless extension candidates. Maximal degree in co-relation 1370. Up to 394 conditions per place. [2023-11-19 07:53:49,981 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 94 selfloop transitions, 3 changer transitions 4/103 dead transitions. [2023-11-19 07:53:49,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 727 flow [2023-11-19 07:53:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-11-19 07:53:49,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46138743455497383 [2023-11-19 07:53:49,986 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-11-19 07:53:49,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-11-19 07:53:49,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-11-19 07:53:49,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,995 INFO L175 Difference]: Start difference. First operand has 49 places, 66 transitions, 342 flow. Second operand 4 states and 705 transitions. [2023-11-19 07:53:49,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 727 flow [2023-11-19 07:53:49,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 103 transitions, 725 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:50,002 INFO L231 Difference]: Finished difference. Result has 52 places, 66 transitions, 349 flow [2023-11-19 07:53:50,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=52, PETRI_TRANSITIONS=66} [2023-11-19 07:53:50,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-11-19 07:53:50,006 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 66 transitions, 349 flow [2023-11-19 07:53:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:50,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:53:50,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash 397320925, now seen corresponding path program 1 times [2023-11-19 07:53:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863823432] [2023-11-19 07:53:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863823432] [2023-11-19 07:53:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863823432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:50,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:50,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012480459] [2023-11-19 07:53:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:50,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:50,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 382 [2023-11-19 07:53:50,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 66 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:50,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 382 [2023-11-19 07:53:50,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:50,205 INFO L124 PetriNetUnfolderBase]: 284/501 cut-off events. [2023-11-19 07:53:50,205 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-19 07:53:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 501 events. 284/501 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2235 event pairs, 174 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1247. Up to 493 conditions per place. [2023-11-19 07:53:50,210 INFO L140 encePairwiseOnDemand]: 380/382 looper letters, 62 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-11-19 07:53:50,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 65 transitions, 471 flow [2023-11-19 07:53:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-11-19 07:53:50,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49040139616055844 [2023-11-19 07:53:50,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-11-19 07:53:50,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-11-19 07:53:50,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:50,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-11-19 07:53:50,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,219 INFO L175 Difference]: Start difference. First operand has 52 places, 66 transitions, 349 flow. Second operand 3 states and 562 transitions. [2023-11-19 07:53:50,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 65 transitions, 471 flow [2023-11-19 07:53:50,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:50,226 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 341 flow [2023-11-19 07:53:50,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2023-11-19 07:53:50,228 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-11-19 07:53:50,228 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 341 flow [2023-11-19 07:53:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:50,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:50,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:53:50,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:50,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 397320924, now seen corresponding path program 1 times [2023-11-19 07:53:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882132869] [2023-11-19 07:53:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:50,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882132869] [2023-11-19 07:53:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882132869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:53:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609768639] [2023-11-19 07:53:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:53:50,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 382 [2023-11-19 07:53:50,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:50,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 382 [2023-11-19 07:53:50,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:50,604 INFO L124 PetriNetUnfolderBase]: 234/416 cut-off events. [2023-11-19 07:53:50,604 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-19 07:53:50,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 416 events. 234/416 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1695 event pairs, 142 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 1124. Up to 360 conditions per place. [2023-11-19 07:53:50,609 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 72 selfloop transitions, 3 changer transitions 19/96 dead transitions. [2023-11-19 07:53:50,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 96 transitions, 692 flow [2023-11-19 07:53:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2023-11-19 07:53:50,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574607329842932 [2023-11-19 07:53:50,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2023-11-19 07:53:50,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2023-11-19 07:53:50,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:50,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2023-11-19 07:53:50,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,623 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 341 flow. Second operand 4 states and 699 transitions. [2023-11-19 07:53:50,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 96 transitions, 692 flow [2023-11-19 07:53:50,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:50,629 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 349 flow [2023-11-19 07:53:50,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2023-11-19 07:53:50,631 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-11-19 07:53:50,631 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 349 flow [2023-11-19 07:53:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:50,632 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:53:50,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:50,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1088855815, now seen corresponding path program 1 times [2023-11-19 07:53:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087500639] [2023-11-19 07:53:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:53:50,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:50,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087500639] [2023-11-19 07:53:50,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087500639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:50,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:50,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:53:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476610585] [2023-11-19 07:53:50,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:50,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:53:50,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:50,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:53:50,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:53:50,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 382 [2023-11-19 07:53:50,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:50,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:50,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 382 [2023-11-19 07:53:50,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:51,033 INFO L124 PetriNetUnfolderBase]: 274/514 cut-off events. [2023-11-19 07:53:51,033 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-11-19 07:53:51,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 514 events. 274/514 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2387 event pairs, 96 based on Foata normal form. 11/456 useless extension candidates. Maximal degree in co-relation 1378. Up to 208 conditions per place. [2023-11-19 07:53:51,038 INFO L140 encePairwiseOnDemand]: 375/382 looper letters, 71 selfloop transitions, 15 changer transitions 1/89 dead transitions. [2023-11-19 07:53:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 598 flow [2023-11-19 07:53:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:53:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:53:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2023-11-19 07:53:51,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4570680628272251 [2023-11-19 07:53:51,043 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2023-11-19 07:53:51,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2023-11-19 07:53:51,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:51,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2023-11-19 07:53:51,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,052 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 349 flow. Second operand 5 states and 873 transitions. [2023-11-19 07:53:51,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 598 flow [2023-11-19 07:53:51,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:51,058 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 379 flow [2023-11-19 07:53:51,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2023-11-19 07:53:51,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-19 07:53:51,059 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 379 flow [2023-11-19 07:53:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:51,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:51,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:53:51,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:51,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1266410221, now seen corresponding path program 1 times [2023-11-19 07:53:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133842054] [2023-11-19 07:53:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133842054] [2023-11-19 07:53:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133842054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846123397] [2023-11-19 07:53:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:51,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:51,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:51,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:51,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:53:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:51,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:53:51,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:51,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846123397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:51,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:51,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-19 07:53:51,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667922077] [2023-11-19 07:53:51,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:53:51,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:53:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:53:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 382 [2023-11-19 07:53:51,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:51,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 382 [2023-11-19 07:53:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:51,640 INFO L124 PetriNetUnfolderBase]: 221/425 cut-off events. [2023-11-19 07:53:51,640 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2023-11-19 07:53:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 425 events. 221/425 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1910 event pairs, 137 based on Foata normal form. 4/407 useless extension candidates. Maximal degree in co-relation 1216. Up to 349 conditions per place. [2023-11-19 07:53:51,644 INFO L140 encePairwiseOnDemand]: 376/382 looper letters, 48 selfloop transitions, 13 changer transitions 9/72 dead transitions. [2023-11-19 07:53:51,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 535 flow [2023-11-19 07:53:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:53:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:53:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 857 transitions. [2023-11-19 07:53:51,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486910994764398 [2023-11-19 07:53:51,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 857 transitions. [2023-11-19 07:53:51,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 857 transitions. [2023-11-19 07:53:51,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:51,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 857 transitions. [2023-11-19 07:53:51,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,657 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 379 flow. Second operand 5 states and 857 transitions. [2023-11-19 07:53:51,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 535 flow [2023-11-19 07:53:51,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 515 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:51,663 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 376 flow [2023-11-19 07:53:51,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-11-19 07:53:51,664 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-11-19 07:53:51,664 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 376 flow [2023-11-19 07:53:51,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:51,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:51,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:51,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:51,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:53:51,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:51,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1322137140, now seen corresponding path program 1 times [2023-11-19 07:53:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071376047] [2023-11-19 07:53:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:52,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071376047] [2023-11-19 07:53:52,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071376047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:52,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809785910] [2023-11-19 07:53:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:52,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:52,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:52,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:53:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:52,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:53:52,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:52,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:53:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809785910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:52,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-11-19 07:53:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426991544] [2023-11-19 07:53:52,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:53:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:53:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:53:52,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 382 [2023-11-19 07:53:52,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 376 flow. Second operand has 15 states, 15 states have (on average 160.73333333333332) internal successors, (2411), 15 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:52,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:52,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 382 [2023-11-19 07:53:52,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:53,476 INFO L124 PetriNetUnfolderBase]: 485/900 cut-off events. [2023-11-19 07:53:53,477 INFO L125 PetriNetUnfolderBase]: For 922/922 co-relation queries the response was YES. [2023-11-19 07:53:53,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 900 events. 485/900 cut-off events. For 922/922 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4905 event pairs, 231 based on Foata normal form. 68/947 useless extension candidates. Maximal degree in co-relation 2509. Up to 297 conditions per place. [2023-11-19 07:53:53,484 INFO L140 encePairwiseOnDemand]: 373/382 looper letters, 86 selfloop transitions, 24 changer transitions 78/190 dead transitions. [2023-11-19 07:53:53,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1295 flow [2023-11-19 07:53:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:53:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 07:53:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3622 transitions. [2023-11-19 07:53:53,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43098524512137076 [2023-11-19 07:53:53,532 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3622 transitions. [2023-11-19 07:53:53,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3622 transitions. [2023-11-19 07:53:53,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:53,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3622 transitions. [2023-11-19 07:53:53,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 164.63636363636363) internal successors, (3622), 22 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:53,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 382.0) internal successors, (8786), 23 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:53,572 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 382.0) internal successors, (8786), 23 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:53,572 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 376 flow. Second operand 22 states and 3622 transitions. [2023-11-19 07:53:53,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1295 flow [2023-11-19 07:53:53,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 190 transitions, 1251 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-19 07:53:53,582 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 487 flow [2023-11-19 07:53:53,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=487, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-19 07:53:53,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-11-19 07:53:53,584 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 487 flow [2023-11-19 07:53:53,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 160.73333333333332) internal successors, (2411), 15 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:53,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:53,585 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-19 07:53:53,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:53:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:53,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1724172924, now seen corresponding path program 2 times [2023-11-19 07:53:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723298917] [2023-11-19 07:53:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723298917] [2023-11-19 07:53:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723298917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836152478] [2023-11-19 07:53:54,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:54,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:54,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:53:54,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:53:54,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:54,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:53:54,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:53:54,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:53:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836152478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:53:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-19 07:53:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618131219] [2023-11-19 07:53:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:53:54,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 382 [2023-11-19 07:53:54,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:54,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 382 [2023-11-19 07:53:54,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:54,390 INFO L124 PetriNetUnfolderBase]: 267/493 cut-off events. [2023-11-19 07:53:54,390 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2023-11-19 07:53:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 493 events. 267/493 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2249 event pairs, 159 based on Foata normal form. 27/485 useless extension candidates. Maximal degree in co-relation 1522. Up to 426 conditions per place. [2023-11-19 07:53:54,395 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 42 selfloop transitions, 10 changer transitions 11/65 dead transitions. [2023-11-19 07:53:54,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 524 flow [2023-11-19 07:53:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 716 transitions. [2023-11-19 07:53:54,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468586387434555 [2023-11-19 07:53:54,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 716 transitions. [2023-11-19 07:53:54,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 716 transitions. [2023-11-19 07:53:54,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:54,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 716 transitions. [2023-11-19 07:53:54,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 382.0) internal successors, (1910), 5 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,406 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 487 flow. Second operand 4 states and 716 transitions. [2023-11-19 07:53:54,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 524 flow [2023-11-19 07:53:54,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 399 flow, removed 12 selfloop flow, removed 19 redundant places. [2023-11-19 07:53:54,411 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 249 flow [2023-11-19 07:53:54,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2023-11-19 07:53:54,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2023-11-19 07:53:54,412 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 249 flow [2023-11-19 07:53:54,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:54,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:54,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:53:54,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-19 07:53:54,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -195688548, now seen corresponding path program 2 times [2023-11-19 07:53:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234420752] [2023-11-19 07:53:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:53:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234420752] [2023-11-19 07:53:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234420752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:53:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390813909] [2023-11-19 07:53:54,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:53:54,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:53:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:54,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:53:54,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:53:54,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:53:54,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:53:54,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:53:54,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:53:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:53:54,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:53:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:53:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390813909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:53:54,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:53:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:53:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643731471] [2023-11-19 07:53:54,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:53:54,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:53:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:53:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:53:54,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 382 [2023-11-19 07:53:54,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:54,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 382 [2023-11-19 07:53:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:55,114 INFO L124 PetriNetUnfolderBase]: 117/213 cut-off events. [2023-11-19 07:53:55,114 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-19 07:53:55,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 213 events. 117/213 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 15 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 646. Up to 80 conditions per place. [2023-11-19 07:53:55,116 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2023-11-19 07:53:55,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 473 flow [2023-11-19 07:53:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:53:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:53:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2023-11-19 07:53:55,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47862129144851656 [2023-11-19 07:53:55,122 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1097 transitions. [2023-11-19 07:53:55,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1097 transitions. [2023-11-19 07:53:55,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:55,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1097 transitions. [2023-11-19 07:53:55,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,135 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 249 flow. Second operand 6 states and 1097 transitions. [2023-11-19 07:53:55,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 473 flow [2023-11-19 07:53:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 75 transitions, 436 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-19 07:53:55,138 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-19 07:53:55,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-19 07:53:55,140 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-11-19 07:53:55,141 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-19 07:53:55,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-19 07:53:55,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-19 07:53:55,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-19 07:53:55,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-19 07:53:55,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-19 07:53:55,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-19 07:53:55,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-11-19 07:53:55,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-11-19 07:53:55,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-11-19 07:53:55,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-11-19 07:53:55,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-19 07:53:55,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-19 07:53:55,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-19 07:53:55,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-19 07:53:55,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:53:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:53:55,368 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:55,373 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:53:55,373 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:53:55,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:55 BasicIcfg [2023-11-19 07:53:55,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:53:55,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:53:55,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:53:55,379 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:53:55,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38" (3/4) ... [2023-11-19 07:53:55,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:53:55,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:53:55,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:53:55,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 07:53:55,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:53:55,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:53:55,394 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:53:55,502 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:53:55,502 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:53:55,503 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:53:55,503 INFO L158 Benchmark]: Toolchain (without parser) took 18222.97ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 116.2MB in the beginning and 201.2MB in the end (delta: -85.1MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,504 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 165.7MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:55,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.93ms. Allocated memory is still 165.7MB. Free memory was 115.7MB in the beginning and 104.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.54ms. Allocated memory is still 165.7MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,505 INFO L158 Benchmark]: Boogie Preprocessor took 62.12ms. Allocated memory is still 165.7MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,506 INFO L158 Benchmark]: RCFGBuilder took 711.19ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 82.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,506 INFO L158 Benchmark]: TraceAbstraction took 16860.78ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 81.7MB in the beginning and 207.5MB in the end (delta: -125.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:55,507 INFO L158 Benchmark]: Witness Printer took 124.41ms. Allocated memory is still 281.0MB. Free memory was 207.5MB in the beginning and 201.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:53:55,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 165.7MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.93ms. Allocated memory is still 165.7MB. Free memory was 115.7MB in the beginning and 104.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.54ms. Allocated memory is still 165.7MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.12ms. Allocated memory is still 165.7MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 711.19ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 82.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16860.78ms. Allocated memory was 165.7MB in the beginning and 281.0MB in the end (delta: 115.3MB). Free memory was 81.7MB in the beginning and 207.5MB in the end (delta: -125.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 124.41ms. Allocated memory is still 281.0MB. Free memory was 207.5MB in the beginning and 201.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0s, 165 PlacesBefore, 29 PlacesAfterwards, 172 TransitionsBefore, 27 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 9 ConcurrentYvCompositions, 9 ChoiceCompositions, 186 TotalNumberOfCompositions, 2110 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1604, independent: 1540, independent conditional: 0, independent unconditional: 1540, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 854, independent: 841, independent conditional: 0, independent unconditional: 841, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1604, independent: 699, independent conditional: 0, independent unconditional: 699, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 854, unknown conditional: 0, unknown unconditional: 854] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 222 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.7s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1611 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1121 mSDsluCounter, 392 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 308 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2752 IncrementalHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 84 mSDtfsCounter, 2752 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=13, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 759 SizeOfPredicates, 11 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 107/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:53:55,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b69805-e7bb-4f8d-97bd-18f4e9c0cab2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE