./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/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_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/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_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:28,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:28,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:44:28,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:28,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:28,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:28,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:28,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:28,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:28,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:28,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:28,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:28,808 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:28,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:28,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:28,814 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:28,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:28,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:28,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:28,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:28,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:28,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:28,818 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:44:28,819 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:44:28,819 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:28,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:28,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:28,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:28,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:28,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:28,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:28,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:28,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:28,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:28,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:28,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:28,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:28,827 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:28,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:28,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:28,828 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:28,828 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_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2023-11-19 07:44:29,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:29,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:29,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:29,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:29,257 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:29,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-19 07:44:32,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:32,870 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:32,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-19 07:44:32,903 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/data/a4a1535fb/47f6d803e8a34b6dbab9cc64436ba458/FLAGc86ffd030 [2023-11-19 07:44:32,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/data/a4a1535fb/47f6d803e8a34b6dbab9cc64436ba458 [2023-11-19 07:44:32,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:32,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:32,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:32,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:32,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:32,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:32" (1/1) ... [2023-11-19 07:44:32,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18604915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:32, skipping insertion in model container [2023-11-19 07:44:32,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:32" (1/1) ... [2023-11-19 07:44:33,018 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:33,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:33,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:33,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:33,832 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:33,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33 WrapperNode [2023-11-19 07:44:33,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:33,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:33,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:33,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:33,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,916 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 212 [2023-11-19 07:44:33,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:33,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:33,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:33,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:33,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:33,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:33,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:33,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:33,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (1/1) ... [2023-11-19 07:44:33,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:34,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:44:34,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:44:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:44:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:44:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:34,088 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 07:44:34,284 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:34,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:34,704 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:34,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:34,719 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:44:34,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:34 BoogieIcfgContainer [2023-11-19 07:44:34,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:34,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:34,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:34,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:34,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:32" (1/3) ... [2023-11-19 07:44:34,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e43c2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:34, skipping insertion in model container [2023-11-19 07:44:34,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:33" (2/3) ... [2023-11-19 07:44:34,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e43c2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:34, skipping insertion in model container [2023-11-19 07:44:34,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:34" (3/3) ... [2023-11-19 07:44:34,733 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-11-19 07:44:34,741 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:34,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:34,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:44:34,753 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:34,857 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:44:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 236 transitions, 479 flow [2023-11-19 07:44:35,019 INFO L124 PetriNetUnfolderBase]: 48/323 cut-off events. [2023-11-19 07:44:35,019 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:35,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 323 events. 48/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1152 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-19 07:44:35,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 236 transitions, 479 flow [2023-11-19 07:44:35,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 233 transitions, 473 flow [2023-11-19 07:44:35,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:35,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-19 07:44:35,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-19 07:44:35,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 233 transitions, 473 flow [2023-11-19 07:44:35,160 INFO L124 PetriNetUnfolderBase]: 47/320 cut-off events. [2023-11-19 07:44:35,161 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:35,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 320 events. 47/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1156 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-19 07:44:35,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 16296 [2023-11-19 07:44:39,495 INFO L134 LiptonReduction]: Checked pairs total: 26159 [2023-11-19 07:44:39,496 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-11-19 07:44:39,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:39,528 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;@55376438, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:39,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:44:39,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:39,531 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:44:39,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:39,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:39,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:39,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 29833, now seen corresponding path program 1 times [2023-11-19 07:44:39,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:39,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170597943] [2023-11-19 07:44:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:39,876 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 07:44:39,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170597943] [2023-11-19 07:44:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170597943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:39,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:39,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939309677] [2023-11-19 07:44:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:39,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:39,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:44:39,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 80 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 07:44:39,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:39,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:44:39,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:40,260 INFO L124 PetriNetUnfolderBase]: 473/1001 cut-off events. [2023-11-19 07:44:40,260 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1001 events. 473/1001 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5317 event pairs, 432 based on Foata normal form. 111/820 useless extension candidates. Maximal degree in co-relation 1874. Up to 936 conditions per place. [2023-11-19 07:44:40,270 INFO L140 encePairwiseOnDemand]: 427/455 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-19 07:44:40,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 223 flow [2023-11-19 07:44:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-11-19 07:44:40,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901098901098901 [2023-11-19 07:44:40,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-11-19 07:44:40,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-11-19 07:44:40,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:40,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-11-19 07:44:40,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 07:44:40,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 07:44:40,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 07:44:40,315 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 167 flow. Second operand 3 states and 669 transitions. [2023-11-19 07:44:40,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 223 flow [2023-11-19 07:44:40,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 223 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:40,322 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 133 flow [2023-11-19 07:44:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-19 07:44:40,328 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-19 07:44:40,328 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 133 flow [2023-11-19 07:44:40,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 07:44:40,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:40,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:40,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:40,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:40,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 926911, now seen corresponding path program 1 times [2023-11-19 07:44:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:40,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531694565] [2023-11-19 07:44:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,415 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 07:44:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531694565] [2023-11-19 07:44:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531694565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371066520] [2023-11-19 07:44:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:40,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:40,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:44:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:44:40,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:40,610 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 07:44:40,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371066520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:40,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:40,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:44:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282037087] [2023-11-19 07:44:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:40,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:44:40,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 07:44:40,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:40,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:44:40,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:40,852 INFO L124 PetriNetUnfolderBase]: 473/1000 cut-off events. [2023-11-19 07:44:40,852 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:40,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 1000 events. 473/1000 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 0/709 useless extension candidates. Maximal degree in co-relation 1936. Up to 933 conditions per place. [2023-11-19 07:44:40,861 INFO L140 encePairwiseOnDemand]: 451/455 looper letters, 47 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-19 07:44:40,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 229 flow [2023-11-19 07:44:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:44:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-11-19 07:44:40,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460989010989011 [2023-11-19 07:44:40,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-11-19 07:44:40,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-11-19 07:44:40,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:40,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-11-19 07:44:40,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 07:44:40,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 07:44:40,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 07:44:40,879 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 133 flow. Second operand 4 states and 839 transitions. [2023-11-19 07:44:40,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 229 flow [2023-11-19 07:44:40,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:40,882 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 131 flow [2023-11-19 07:44:40,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-19 07:44:40,883 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-19 07:44:40,883 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 131 flow [2023-11-19 07:44:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 07:44:40,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:40,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:44:40,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:44:41,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:41,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:41,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1846244778, now seen corresponding path program 1 times [2023-11-19 07:44:41,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319291385] [2023-11-19 07:44:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:41,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319291385] [2023-11-19 07:44:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319291385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:41,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779475993] [2023-11-19 07:44:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:41,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:41,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:41,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:44:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:41,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:44:41,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:41,393 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 07:44:41,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:41,415 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 07:44:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779475993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:41,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:44:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066785578] [2023-11-19 07:44:41,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:41,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:44:41,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:44:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:44:41,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-19 07:44:41,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 07:44:41,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:41,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-19 07:44:41,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:41,688 INFO L124 PetriNetUnfolderBase]: 473/1003 cut-off events. [2023-11-19 07:44:41,688 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:41,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1003 events. 473/1003 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 1930. Up to 935 conditions per place. [2023-11-19 07:44:41,696 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-19 07:44:41,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 249 flow [2023-11-19 07:44:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-11-19 07:44:41,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2023-11-19 07:44:41,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-11-19 07:44:41,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-11-19 07:44:41,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:41,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-11-19 07:44:41,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 07:44:41,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 07:44:41,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 07:44:41,717 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 131 flow. Second operand 6 states and 1232 transitions. [2023-11-19 07:44:41,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 249 flow [2023-11-19 07:44:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:41,720 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-11-19 07:44:41,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-19 07:44:41,721 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-19 07:44:41,721 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-11-19 07:44:41,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 07:44:41,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:41,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 07:44:41,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:41,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:41,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:41,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2004503584, now seen corresponding path program 2 times [2023-11-19 07:44:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909648872] [2023-11-19 07:44:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:41,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,016 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 07:44:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909648872] [2023-11-19 07:44:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909648872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362861518] [2023-11-19 07:44:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:42,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-19 07:44:42,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 07:44:42,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:42,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-19 07:44:42,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:42,238 INFO L124 PetriNetUnfolderBase]: 417/904 cut-off events. [2023-11-19 07:44:42,238 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:44:42,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 904 events. 417/904 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5411 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1743. Up to 824 conditions per place. [2023-11-19 07:44:42,246 INFO L140 encePairwiseOnDemand]: 450/455 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-19 07:44:42,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 337 flow [2023-11-19 07:44:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-19 07:44:42,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-11-19 07:44:42,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-19 07:44:42,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-19 07:44:42,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:42,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-19 07:44:42,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 07:44:42,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 07:44:42,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 07:44:42,260 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 660 transitions. [2023-11-19 07:44:42,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 337 flow [2023-11-19 07:44:42,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 323 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:42,268 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-11-19 07:44:42,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-19 07:44:42,270 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-19 07:44:42,270 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-11-19 07:44:42,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 07:44:42,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:42,275 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:44:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:44:42,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:42,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2112314046, now seen corresponding path program 1 times [2023-11-19 07:44:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:42,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924987410] [2023-11-19 07:44:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:44:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924987410] [2023-11-19 07:44:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924987410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721607459] [2023-11-19 07:44:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:42,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:42,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:44:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:42,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:44:42,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:44:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721607459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:42,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:42,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:44:42,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627041014] [2023-11-19 07:44:42,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:42,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:44:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:44:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:44:42,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-19 07:44:42,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 07:44:42,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:42,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-19 07:44:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:42,934 INFO L124 PetriNetUnfolderBase]: 438/907 cut-off events. [2023-11-19 07:44:42,934 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-19 07:44:42,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 907 events. 438/907 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4739 event pairs, 396 based on Foata normal form. 6/698 useless extension candidates. Maximal degree in co-relation 1798. Up to 841 conditions per place. [2023-11-19 07:44:42,942 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 46 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-11-19 07:44:42,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 303 flow [2023-11-19 07:44:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:44:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:44:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2415 transitions. [2023-11-19 07:44:42,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-19 07:44:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2415 transitions. [2023-11-19 07:44:42,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2415 transitions. [2023-11-19 07:44:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:42,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2415 transitions. [2023-11-19 07:44:42,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.25) internal successors, (2415), 12 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states 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 07:44:42,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states 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 07:44:42,979 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states 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 07:44:42,979 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2415 transitions. [2023-11-19 07:44:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 303 flow [2023-11-19 07:44:42,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:42,983 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-11-19 07:44:42,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-19 07:44:42,984 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-19 07:44:42,984 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-11-19 07:44:42,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 07:44:42,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:42,986 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:44:43,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:43,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-19 07:44:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1805609218, now seen corresponding path program 2 times [2023-11-19 07:44:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:43,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764369537] [2023-11-19 07:44:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:43,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:44:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:43,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:44:43,301 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:44:43,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:44:43,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-19 07:44:43,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-19 07:44:43,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-19 07:44:43,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-19 07:44:43,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-19 07:44:43,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-19 07:44:43,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-19 07:44:43,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-19 07:44:43,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-19 07:44:43,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-19 07:44:43,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-19 07:44:43,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-19 07:44:43,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-19 07:44:43,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-19 07:44:43,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-19 07:44:43,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-19 07:44:43,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-19 07:44:43,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-19 07:44:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:44:43,312 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-19 07:44:43,314 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:44:43,314 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:44:43,369 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:44:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,459 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-19 07:44:43,459 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:44:43,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-19 07:44:43,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,477 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:43,477 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-19 07:44:43,585 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-19 07:44:43,585 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:44:43,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-19 07:44:43,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-11-19 07:44:48,814 INFO L134 LiptonReduction]: Checked pairs total: 81143 [2023-11-19 07:44:48,814 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-11-19 07:44:48,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:48,817 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;@55376438, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:48,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 07:44:48,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:48,819 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:44:48,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:48,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:48,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:48,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:44:48,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 52310, now seen corresponding path program 1 times [2023-11-19 07:44:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526407387] [2023-11-19 07:44:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:48,849 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 07:44:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526407387] [2023-11-19 07:44:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526407387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:48,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:48,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321357418] [2023-11-19 07:44:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:48,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:44:48,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 07:44:48,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:48,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:44:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:52,297 INFO L124 PetriNetUnfolderBase]: 17246/27246 cut-off events. [2023-11-19 07:44:52,298 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-19 07:44:52,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52632 conditions, 27246 events. 17246/27246 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204301 event pairs, 16184 based on Foata normal form. 4497/23565 useless extension candidates. Maximal degree in co-relation 24620. Up to 25288 conditions per place. [2023-11-19 07:44:52,504 INFO L140 encePairwiseOnDemand]: 580/617 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-19 07:44:52,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 326 flow [2023-11-19 07:44:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-11-19 07:44:52,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49054565099945974 [2023-11-19 07:44:52,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-11-19 07:44:52,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-11-19 07:44:52,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:52,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-11-19 07:44:52,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 07:44:52,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:44:52,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:44:52,521 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 248 flow. Second operand 3 states and 908 transitions. [2023-11-19 07:44:52,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 326 flow [2023-11-19 07:44:52,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:52,532 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 196 flow [2023-11-19 07:44:52,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-11-19 07:44:52,535 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-19 07:44:52,536 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 196 flow [2023-11-19 07:44:52,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 07:44:52,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:52,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:52,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:44:52,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:44:52,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1624816, now seen corresponding path program 1 times [2023-11-19 07:44:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592256513] [2023-11-19 07:44:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,574 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 07:44:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592256513] [2023-11-19 07:44:52,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592256513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:52,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493590773] [2023-11-19 07:44:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:52,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:44:52,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 07:44:52,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:52,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:44:52,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:55,635 INFO L124 PetriNetUnfolderBase]: 17246/27245 cut-off events. [2023-11-19 07:44:55,635 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-19 07:44:55,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52637 conditions, 27245 events. 17246/27245 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204445 event pairs, 16184 based on Foata normal form. 0/19068 useless extension candidates. Maximal degree in co-relation 52624. Up to 25285 conditions per place. [2023-11-19 07:44:55,796 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-19 07:44:55,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 332 flow [2023-11-19 07:44:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-11-19 07:44:55,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705564559697461 [2023-11-19 07:44:55,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-11-19 07:44:55,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-11-19 07:44:55,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:55,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-11-19 07:44:55,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 07:44:55,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:44:55,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:44:55,848 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 196 flow. Second operand 3 states and 871 transitions. [2023-11-19 07:44:55,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 332 flow [2023-11-19 07:44:55,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:55,853 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 192 flow [2023-11-19 07:44:55,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-11-19 07:44:55,854 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-19 07:44:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 192 flow [2023-11-19 07:44:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 07:44:55,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:55,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:44:55,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:44:55,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1725381562, now seen corresponding path program 1 times [2023-11-19 07:44:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304862997] [2023-11-19 07:44:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:55,919 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 07:44:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304862997] [2023-11-19 07:44:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304862997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214761915] [2023-11-19 07:44:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:55,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:55,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:55,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:55,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:44:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:56,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:44:56,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:56,065 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 07:44:56,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:56,079 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 07:44:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214761915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:56,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:44:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636928503] [2023-11-19 07:44:56,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:44:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:56,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:44:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:44:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:44:56,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 07:44:56,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:56,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:44:56,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:58,799 INFO L124 PetriNetUnfolderBase]: 17246/27248 cut-off events. [2023-11-19 07:44:58,799 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-19 07:44:58,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52646 conditions, 27248 events. 17246/27248 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 204389 event pairs, 16184 based on Foata normal form. 3/19075 useless extension candidates. Maximal degree in co-relation 52618. Up to 25287 conditions per place. [2023-11-19 07:44:58,958 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-11-19 07:44:58,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 350 flow [2023-11-19 07:44:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1672 transitions. [2023-11-19 07:44:58,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516477579686656 [2023-11-19 07:44:58,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1672 transitions. [2023-11-19 07:44:58,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1672 transitions. [2023-11-19 07:44:58,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:58,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1672 transitions. [2023-11-19 07:44:58,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 6 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states 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 07:44:58,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 07:44:58,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 07:44:58,981 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 192 flow. Second operand 6 states and 1672 transitions. [2023-11-19 07:44:58,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 350 flow [2023-11-19 07:44:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:58,986 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 224 flow [2023-11-19 07:44:58,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-11-19 07:44:58,989 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2023-11-19 07:44:58,989 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 224 flow [2023-11-19 07:44:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 07:44:58,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:58,991 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:59,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:59,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:59,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:44:59,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -688082784, now seen corresponding path program 2 times [2023-11-19 07:44:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524304394] [2023-11-19 07:44:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:59,278 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 07:44:59,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:59,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524304394] [2023-11-19 07:44:59,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524304394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:59,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:59,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626115615] [2023-11-19 07:44:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:59,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:44:59,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:44:59,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:59,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:44:59,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:02,231 INFO L124 PetriNetUnfolderBase]: 17367/27083 cut-off events. [2023-11-19 07:45:02,231 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-19 07:45:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52405 conditions, 27083 events. 17367/27083 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 200242 event pairs, 13175 based on Foata normal form. 0/18987 useless extension candidates. Maximal degree in co-relation 52370. Up to 25182 conditions per place. [2023-11-19 07:45:02,439 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 90 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-11-19 07:45:02,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 105 transitions, 446 flow [2023-11-19 07:45:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-11-19 07:45:02,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48190167477039436 [2023-11-19 07:45:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-11-19 07:45:02,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-11-19 07:45:02,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:02,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-11-19 07:45:02,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 07:45:02,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:45:02,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:45:02,458 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 224 flow. Second operand 3 states and 892 transitions. [2023-11-19 07:45:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 105 transitions, 446 flow [2023-11-19 07:45:02,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 432 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:02,462 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 226 flow [2023-11-19 07:45:02,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-19 07:45:02,464 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2023-11-19 07:45:02,465 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 226 flow [2023-11-19 07:45:02,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:45:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:02,484 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:45:02,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:45:02,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1765353789, now seen corresponding path program 1 times [2023-11-19 07:45:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855184207] [2023-11-19 07:45:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:02,610 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 07:45:02,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:02,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855184207] [2023-11-19 07:45:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855184207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:02,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541654136] [2023-11-19 07:45:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:02,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:02,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:45:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:02,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:02,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:02,763 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 07:45:02,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:02,840 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 07:45:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541654136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:02,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:45:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197750928] [2023-11-19 07:45:02,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:02,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:45:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:45:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:45:02,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:45:02,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 226 flow. Second operand has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states 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 07:45:02,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:02,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:45:02,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:06,048 INFO L124 PetriNetUnfolderBase]: 17299/26952 cut-off events. [2023-11-19 07:45:06,048 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES. [2023-11-19 07:45:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53638 conditions, 26952 events. 17299/26952 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 199523 event pairs, 16150 based on Foata normal form. 6/19152 useless extension candidates. Maximal degree in co-relation 53584. Up to 25198 conditions per place. [2023-11-19 07:45:06,270 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 69 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-11-19 07:45:06,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 422 flow [2023-11-19 07:45:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:45:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:45:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3277 transitions. [2023-11-19 07:45:06,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44259859535386276 [2023-11-19 07:45:06,291 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3277 transitions. [2023-11-19 07:45:06,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3277 transitions. [2023-11-19 07:45:06,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:06,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3277 transitions. [2023-11-19 07:45:06,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 273.0833333333333) internal successors, (3277), 12 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states 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 07:45:06,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states 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 07:45:06,332 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states 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 07:45:06,332 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 226 flow. Second operand 12 states and 3277 transitions. [2023-11-19 07:45:06,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 422 flow [2023-11-19 07:45:06,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:06,339 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 308 flow [2023-11-19 07:45:06,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2023-11-19 07:45:06,342 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2023-11-19 07:45:06,342 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 308 flow [2023-11-19 07:45:06,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states 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 07:45:06,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:06,344 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:06,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:06,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:06,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:45:06,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -301365379, now seen corresponding path program 2 times [2023-11-19 07:45:06,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:06,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705861770] [2023-11-19 07:45:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:07,084 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 07:45:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:07,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705861770] [2023-11-19 07:45:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705861770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:07,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:07,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:07,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987067422] [2023-11-19 07:45:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:07,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:07,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:07,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 617 [2023-11-19 07:45:07,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 07:45:07,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:07,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 617 [2023-11-19 07:45:07,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:11,525 INFO L124 PetriNetUnfolderBase]: 22033/35683 cut-off events. [2023-11-19 07:45:11,525 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2023-11-19 07:45:11,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71261 conditions, 35683 events. 22033/35683 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 292499 event pairs, 5970 based on Foata normal form. 0/26283 useless extension candidates. Maximal degree in co-relation 71183. Up to 21860 conditions per place. [2023-11-19 07:45:11,803 INFO L140 encePairwiseOnDemand]: 602/617 looper letters, 228 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2023-11-19 07:45:11,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 266 transitions, 1216 flow [2023-11-19 07:45:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:45:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2054 transitions. [2023-11-19 07:45:11,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47557304931697153 [2023-11-19 07:45:11,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2054 transitions. [2023-11-19 07:45:11,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2054 transitions. [2023-11-19 07:45:11,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:11,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2054 transitions. [2023-11-19 07:45:11,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 293.42857142857144) internal successors, (2054), 7 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states 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 07:45:11,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states 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 07:45:11,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states 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 07:45:11,829 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 308 flow. Second operand 7 states and 2054 transitions. [2023-11-19 07:45:11,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 266 transitions, 1216 flow [2023-11-19 07:45:11,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 266 transitions, 1168 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:45:11,838 INFO L231 Difference]: Finished difference. Result has 114 places, 117 transitions, 424 flow [2023-11-19 07:45:11,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=114, PETRI_TRANSITIONS=117} [2023-11-19 07:45:11,839 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2023-11-19 07:45:11,840 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 117 transitions, 424 flow [2023-11-19 07:45:11,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 07:45:11,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:11,841 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:45:11,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:45:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash -855357098, now seen corresponding path program 1 times [2023-11-19 07:45:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:11,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384490222] [2023-11-19 07:45:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 07:45:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384490222] [2023-11-19 07:45:11,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384490222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:11,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642304121] [2023-11-19 07:45:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:11,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:11,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-19 07:45:11,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 117 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:45:11,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:11,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-19 07:45:11,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:15,968 INFO L124 PetriNetUnfolderBase]: 21267/34073 cut-off events. [2023-11-19 07:45:15,968 INFO L125 PetriNetUnfolderBase]: For 8167/8168 co-relation queries the response was YES. [2023-11-19 07:45:16,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78511 conditions, 34073 events. 21267/34073 cut-off events. For 8167/8168 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 274119 event pairs, 7420 based on Foata normal form. 0/26783 useless extension candidates. Maximal degree in co-relation 78452. Up to 28829 conditions per place. [2023-11-19 07:45:16,223 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 140 selfloop transitions, 6 changer transitions 0/159 dead transitions. [2023-11-19 07:45:16,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 846 flow [2023-11-19 07:45:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-11-19 07:45:16,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48730415991356024 [2023-11-19 07:45:16,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-11-19 07:45:16,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-11-19 07:45:16,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:16,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-11-19 07:45:16,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:16,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:45:16,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 07:45:16,236 INFO L175 Difference]: Start difference. First operand has 114 places, 117 transitions, 424 flow. Second operand 3 states and 902 transitions. [2023-11-19 07:45:16,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 846 flow [2023-11-19 07:45:16,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 846 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:16,282 INFO L231 Difference]: Finished difference. Result has 116 places, 117 transitions, 446 flow [2023-11-19 07:45:16,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=116, PETRI_TRANSITIONS=117} [2023-11-19 07:45:16,283 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2023-11-19 07:45:16,283 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 117 transitions, 446 flow [2023-11-19 07:45:16,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:45:16,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:16,284 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:16,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:45:16,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:45:16,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash -855357164, now seen corresponding path program 1 times [2023-11-19 07:45:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018529250] [2023-11-19 07:45:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:16,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:45:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018529250] [2023-11-19 07:45:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018529250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560157010] [2023-11-19 07:45:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:16,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:16,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:16,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0e1792-0d91-4791-be5b-fe4f59cbdeb6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:45:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:16,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:45:16,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:45:16,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560157010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:45:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61828778] [2023-11-19 07:45:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:16,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:16,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-19 07:45:16,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 117 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 07:45:16,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:16,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-19 07:45:16,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand