./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:32,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:32,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:25:32,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:32,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:32,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:32,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:32,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:32,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:32,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:32,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:32,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:32,977 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:32,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:32,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:25:32,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:32,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:32,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:32,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:32,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:25:32,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:32,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:25:32,983 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:25:32,983 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:25:32,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:32,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:25:32,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:32,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:32,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:32,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:32,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:32,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:32,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:32,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:25:32,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:32,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:32,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:32,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:25:32,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:32,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:32,992 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:32,993 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_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2023-11-12 02:25:33,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:33,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:33,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:33,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:33,431 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:33,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/stack-1.i [2023-11-12 02:25:36,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:37,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:37,070 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/sv-benchmarks/c/pthread/stack-1.i [2023-11-12 02:25:37,091 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/data/ea74c0756/278e04d6924d4aada2d42fc92642cf84/FLAGea0a376a9 [2023-11-12 02:25:37,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/data/ea74c0756/278e04d6924d4aada2d42fc92642cf84 [2023-11-12 02:25:37,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:37,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:37,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:37,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:37,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:37,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:37" (1/1) ... [2023-11-12 02:25:37,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d2d710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:37, skipping insertion in model container [2023-11-12 02:25:37,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:37" (1/1) ... [2023-11-12 02:25:37,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:37,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:37,861 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:37,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:38,010 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:38,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38 WrapperNode [2023-11-12 02:25:38,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:38,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:38,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:38,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:38,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,077 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 166 [2023-11-12 02:25:38,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:38,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:38,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:38,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:38,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:38,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:38,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:38,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:38,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (1/1) ... [2023-11-12 02:25:38,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:38,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:38,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:38,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:25:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:25:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:25:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:25:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:25:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:25:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:25:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:25:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:25:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:38,329 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:25:38,550 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:38,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:38,864 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:38,875 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:38,876 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:25:38,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:38 BoogieIcfgContainer [2023-11-12 02:25:38,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:38,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:38,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:38,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:38,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:37" (1/3) ... [2023-11-12 02:25:38,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbc05fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:38, skipping insertion in model container [2023-11-12 02:25:38,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:38" (2/3) ... [2023-11-12 02:25:38,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbc05fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:38, skipping insertion in model container [2023-11-12 02:25:38,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:38" (3/3) ... [2023-11-12 02:25:38,888 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-11-12 02:25:38,904 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:25:38,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:38,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:25:38,914 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:25:39,048 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:25:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 187 transitions, 388 flow [2023-11-12 02:25:39,236 INFO L124 PetriNetUnfolderBase]: 12/185 cut-off events. [2023-11-12 02:25:39,236 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:39,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 12/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-12 02:25:39,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 187 transitions, 388 flow [2023-11-12 02:25:39,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 175 transitions, 359 flow [2023-11-12 02:25:39,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:39,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 175 transitions, 359 flow [2023-11-12 02:25:39,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 175 transitions, 359 flow [2023-11-12 02:25:39,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 359 flow [2023-11-12 02:25:39,335 INFO L124 PetriNetUnfolderBase]: 12/175 cut-off events. [2023-11-12 02:25:39,339 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:39,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 12/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 428 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-12 02:25:39,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 10672 [2023-11-12 02:25:45,695 INFO L134 LiptonReduction]: Checked pairs total: 14892 [2023-11-12 02:25:45,698 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-12 02:25:45,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:45,747 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;@4af24ffe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:45,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:25:45,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:25:45,761 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:25:45,761 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:45,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:45,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:45,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:45,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash -619665341, now seen corresponding path program 1 times [2023-11-12 02:25:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:45,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332001426] [2023-11-12 02:25:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332001426] [2023-11-12 02:25:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332001426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:46,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:46,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:46,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324937875] [2023-11-12 02:25:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-11-12 02:25:46,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:46,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-11-12 02:25:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:46,824 INFO L124 PetriNetUnfolderBase]: 1181/1928 cut-off events. [2023-11-12 02:25:46,824 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-12 02:25:46,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1928 events. 1181/1928 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8667 event pairs, 459 based on Foata normal form. 0/1317 useless extension candidates. Maximal degree in co-relation 3648. Up to 1295 conditions per place. [2023-11-12 02:25:46,848 INFO L140 encePairwiseOnDemand]: 356/363 looper letters, 60 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-12 02:25:46,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 269 flow [2023-11-12 02:25:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-11-12 02:25:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215794306703397 [2023-11-12 02:25:46,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-11-12 02:25:46,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-11-12 02:25:46,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:46,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-11-12 02:25:46,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:46,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:46,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:46,915 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 568 transitions. [2023-11-12 02:25:46,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 269 flow [2023-11-12 02:25:46,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:25:46,927 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-11-12 02:25:46,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-12 02:25:46,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-12 02:25:46,936 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-11-12 02:25:46,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:46,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:46,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:46,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:25:46,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash 542669350, now seen corresponding path program 1 times [2023-11-12 02:25:46,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:46,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855920723] [2023-11-12 02:25:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855920723] [2023-11-12 02:25:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855920723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:47,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:47,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575402569] [2023-11-12 02:25:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:47,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-12 02:25:47,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:47,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-12 02:25:47,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:47,720 INFO L124 PetriNetUnfolderBase]: 1798/2993 cut-off events. [2023-11-12 02:25:47,720 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-12 02:25:47,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6346 conditions, 2993 events. 1798/2993 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15276 event pairs, 910 based on Foata normal form. 0/2373 useless extension candidates. Maximal degree in co-relation 6006. Up to 1870 conditions per place. [2023-11-12 02:25:47,744 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-12 02:25:47,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 330 flow [2023-11-12 02:25:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-11-12 02:25:47,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2023-11-12 02:25:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-11-12 02:25:47,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-11-12 02:25:47,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:47,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-11-12 02:25:47,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,759 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 583 transitions. [2023-11-12 02:25:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 330 flow [2023-11-12 02:25:47,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:47,769 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-11-12 02:25:47,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-12 02:25:47,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-12 02:25:47,771 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-11-12 02:25:47,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:47,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:25:47,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:47,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1665313666, now seen corresponding path program 1 times [2023-11-12 02:25:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467524876] [2023-11-12 02:25:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467524876] [2023-11-12 02:25:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467524876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:47,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866112637] [2023-11-12 02:25:47,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:47,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-12 02:25:47,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:47,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:47,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-12 02:25:47,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:48,609 INFO L124 PetriNetUnfolderBase]: 2246/3651 cut-off events. [2023-11-12 02:25:48,609 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-12 02:25:48,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 3651 events. 2246/3651 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20095 event pairs, 1026 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 6322. Up to 2950 conditions per place. [2023-11-12 02:25:48,642 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 68 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-12 02:25:48,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 338 flow [2023-11-12 02:25:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-11-12 02:25:48,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325987144168962 [2023-11-12 02:25:48,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-11-12 02:25:48,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-11-12 02:25:48,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:48,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-11-12 02:25:48,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:48,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:48,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:48,655 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 580 transitions. [2023-11-12 02:25:48,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 338 flow [2023-11-12 02:25:48,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:48,661 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-11-12 02:25:48,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-12 02:25:48,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-12 02:25:48,671 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-11-12 02:25:48,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:48,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:48,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:48,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:48,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:48,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -230202494, now seen corresponding path program 1 times [2023-11-12 02:25:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406208082] [2023-11-12 02:25:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:48,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:48,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406208082] [2023-11-12 02:25:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406208082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:48,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251383674] [2023-11-12 02:25:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:48,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:48,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-12 02:25:48,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:48,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:48,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-12 02:25:48,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:49,284 INFO L124 PetriNetUnfolderBase]: 1976/3327 cut-off events. [2023-11-12 02:25:49,284 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2023-11-12 02:25:49,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3327 events. 1976/3327 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18118 event pairs, 305 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7372. Up to 2581 conditions per place. [2023-11-12 02:25:49,351 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 58 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-12 02:25:49,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 319 flow [2023-11-12 02:25:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2023-11-12 02:25:49,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188246097337006 [2023-11-12 02:25:49,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2023-11-12 02:25:49,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2023-11-12 02:25:49,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:49,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2023-11-12 02:25:49,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,362 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 565 transitions. [2023-11-12 02:25:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 319 flow [2023-11-12 02:25:49,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:49,367 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 142 flow [2023-11-12 02:25:49,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-12 02:25:49,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-12 02:25:49,368 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 142 flow [2023-11-12 02:25:49,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:49,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:49,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:49,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -230202525, now seen corresponding path program 1 times [2023-11-12 02:25:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804623372] [2023-11-12 02:25:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804623372] [2023-11-12 02:25:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804623372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:49,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:49,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537715714] [2023-11-12 02:25:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:49,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:49,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-12 02:25:49,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:49,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-12 02:25:49,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:49,944 INFO L124 PetriNetUnfolderBase]: 1863/3136 cut-off events. [2023-11-12 02:25:49,944 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2023-11-12 02:25:49,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 3136 events. 1863/3136 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16893 event pairs, 95 based on Foata normal form. 78/2904 useless extension candidates. Maximal degree in co-relation 7260. Up to 2850 conditions per place. [2023-11-12 02:25:49,972 INFO L140 encePairwiseOnDemand]: 361/363 looper letters, 60 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-12 02:25:49,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 323 flow [2023-11-12 02:25:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-11-12 02:25:49,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519742883379247 [2023-11-12 02:25:49,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-11-12 02:25:49,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-11-12 02:25:49,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:49,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-11-12 02:25:49,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,983 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 142 flow. Second operand 3 states and 566 transitions. [2023-11-12 02:25:49,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 323 flow [2023-11-12 02:25:49,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:49,991 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 136 flow [2023-11-12 02:25:49,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-12 02:25:49,995 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-12 02:25:49,995 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 136 flow [2023-11-12 02:25:49,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:49,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:49,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:49,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:49,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1750232177, now seen corresponding path program 1 times [2023-11-12 02:25:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818835037] [2023-11-12 02:25:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818835037] [2023-11-12 02:25:50,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818835037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585536058] [2023-11-12 02:25:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:50,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:50,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:50,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:50,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:50,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:50,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585536058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:50,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-12 02:25:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173411428] [2023-11-12 02:25:50,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:50,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:25:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:25:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:25:50,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-12 02:25:50,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 136 flow. Second operand has 10 states, 10 states have (on average 163.7) internal successors, (1637), 10 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:50,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:50,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-12 02:25:50,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:52,016 INFO L124 PetriNetUnfolderBase]: 4162/6891 cut-off events. [2023-11-12 02:25:52,017 INFO L125 PetriNetUnfolderBase]: For 2660/2660 co-relation queries the response was YES. [2023-11-12 02:25:52,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17099 conditions, 6891 events. 4162/6891 cut-off events. For 2660/2660 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39046 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16514. Up to 2039 conditions per place. [2023-11-12 02:25:52,146 INFO L140 encePairwiseOnDemand]: 351/363 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-11-12 02:25:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1360 flow [2023-11-12 02:25:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:25:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:25:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2483 transitions. [2023-11-12 02:25:52,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885871704053522 [2023-11-12 02:25:52,157 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2483 transitions. [2023-11-12 02:25:52,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2483 transitions. [2023-11-12 02:25:52,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:52,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2483 transitions. [2023-11-12 02:25:52,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 177.35714285714286) internal successors, (2483), 14 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,187 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,187 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 136 flow. Second operand 14 states and 2483 transitions. [2023-11-12 02:25:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1360 flow [2023-11-12 02:25:52,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:52,209 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-11-12 02:25:52,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-11-12 02:25:52,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-12 02:25:52,213 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-11-12 02:25:52,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.7) internal successors, (1637), 10 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:52,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:52,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:52,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:52,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:52,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1088658518, now seen corresponding path program 1 times [2023-11-12 02:25:52,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:52,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127245471] [2023-11-12 02:25:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127245471] [2023-11-12 02:25:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127245471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:52,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177616842] [2023-11-12 02:25:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:52,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:52,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:52,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 363 [2023-11-12 02:25:52,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:52,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:52,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 363 [2023-11-12 02:25:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:53,089 INFO L124 PetriNetUnfolderBase]: 1972/3341 cut-off events. [2023-11-12 02:25:53,090 INFO L125 PetriNetUnfolderBase]: For 3435/3435 co-relation queries the response was YES. [2023-11-12 02:25:53,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 3341 events. 1972/3341 cut-off events. For 3435/3435 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17470 event pairs, 419 based on Foata normal form. 212/3301 useless extension candidates. Maximal degree in co-relation 9582. Up to 2429 conditions per place. [2023-11-12 02:25:53,113 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-12 02:25:53,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 532 flow [2023-11-12 02:25:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-11-12 02:25:53,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114784205693297 [2023-11-12 02:25:53,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-11-12 02:25:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-11-12 02:25:53,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:53,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-11-12 02:25:53,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,123 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 557 transitions. [2023-11-12 02:25:53,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 532 flow [2023-11-12 02:25:53,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-12 02:25:53,147 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-11-12 02:25:53,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-12 02:25:53,148 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-11-12 02:25:53,148 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-11-12 02:25:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:53,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:53,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:53,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1578919842, now seen corresponding path program 1 times [2023-11-12 02:25:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611781524] [2023-11-12 02:25:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611781524] [2023-11-12 02:25:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611781524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937026996] [2023-11-12 02:25:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:53,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:53,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:25:53,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:53,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937026996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 02:25:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678745397] [2023-11-12 02:25:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:53,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:53,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-12 02:25:53,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:53,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:53,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-12 02:25:53,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:54,040 INFO L124 PetriNetUnfolderBase]: 1801/3184 cut-off events. [2023-11-12 02:25:54,040 INFO L125 PetriNetUnfolderBase]: For 3013/3013 co-relation queries the response was YES. [2023-11-12 02:25:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15701 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-11-12 02:25:54,065 INFO L140 encePairwiseOnDemand]: 352/363 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-11-12 02:25:54,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-11-12 02:25:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1045 transitions. [2023-11-12 02:25:54,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2023-11-12 02:25:54,071 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1045 transitions. [2023-11-12 02:25:54,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1045 transitions. [2023-11-12 02:25:54,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:54,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1045 transitions. [2023-11-12 02:25:54,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,082 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,082 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 1045 transitions. [2023-11-12 02:25:54,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-11-12 02:25:54,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:54,091 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-11-12 02:25:54,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-12 02:25:54,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:25:54,093 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-11-12 02:25:54,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:54,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:54,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:54,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:54,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 881502384, now seen corresponding path program 1 times [2023-11-12 02:25:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187392946] [2023-11-12 02:25:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187392946] [2023-11-12 02:25:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187392946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002589979] [2023-11-12 02:25:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:54,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:54,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:54,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:25:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:54,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:25:54,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:54,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002589979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:54,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:25:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69246765] [2023-11-12 02:25:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:54,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-12 02:25:54,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:54,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:54,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-12 02:25:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:55,244 INFO L124 PetriNetUnfolderBase]: 1623/2878 cut-off events. [2023-11-12 02:25:55,244 INFO L125 PetriNetUnfolderBase]: For 3860/3864 co-relation queries the response was YES. [2023-11-12 02:25:55,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9035 conditions, 2878 events. 1623/2878 cut-off events. For 3860/3864 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14050 event pairs, 171 based on Foata normal form. 4/2760 useless extension candidates. Maximal degree in co-relation 8538. Up to 2499 conditions per place. [2023-11-12 02:25:55,265 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 96 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-12 02:25:55,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 766 flow [2023-11-12 02:25:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-11-12 02:25:55,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144628099173554 [2023-11-12 02:25:55,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-11-12 02:25:55,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-11-12 02:25:55,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:55,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-11-12 02:25:55,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,277 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 4 states and 747 transitions. [2023-11-12 02:25:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 766 flow [2023-11-12 02:25:55,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 758 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:55,294 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 395 flow [2023-11-12 02:25:55,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-12 02:25:55,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:25:55,296 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 395 flow [2023-11-12 02:25:55,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:55,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:55,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:55,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:55,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:55,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash 881502430, now seen corresponding path program 1 times [2023-11-12 02:25:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:55,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436454689] [2023-11-12 02:25:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:55,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436454689] [2023-11-12 02:25:55,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436454689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:55,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:55,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:55,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047634342] [2023-11-12 02:25:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:55,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-12 02:25:55,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:55,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:55,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-12 02:25:55,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:56,040 INFO L124 PetriNetUnfolderBase]: 1445/2588 cut-off events. [2023-11-12 02:25:56,040 INFO L125 PetriNetUnfolderBase]: For 3483/3487 co-relation queries the response was YES. [2023-11-12 02:25:56,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 2588 events. 1445/2588 cut-off events. For 3483/3487 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12323 event pairs, 505 based on Foata normal form. 4/2586 useless extension candidates. Maximal degree in co-relation 4734. Up to 1522 conditions per place. [2023-11-12 02:25:56,059 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 82 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-11-12 02:25:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 702 flow [2023-11-12 02:25:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-11-12 02:25:56,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512396694214876 [2023-11-12 02:25:56,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-11-12 02:25:56,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-11-12 02:25:56,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:56,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-11-12 02:25:56,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,070 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 395 flow. Second operand 3 states and 558 transitions. [2023-11-12 02:25:56,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 702 flow [2023-11-12 02:25:56,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:56,082 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-11-12 02:25:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-12 02:25:56,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:25:56,083 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-11-12 02:25:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:56,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:56,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:56,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1452294431, now seen corresponding path program 1 times [2023-11-12 02:25:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974011791] [2023-11-12 02:25:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:56,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974011791] [2023-11-12 02:25:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974011791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012084247] [2023-11-12 02:25:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:56,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:56,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:56,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 363 [2023-11-12 02:25:56,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:56,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 363 [2023-11-12 02:25:56,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:56,785 INFO L124 PetriNetUnfolderBase]: 1424/2553 cut-off events. [2023-11-12 02:25:56,785 INFO L125 PetriNetUnfolderBase]: For 4190/4190 co-relation queries the response was YES. [2023-11-12 02:25:56,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12106 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7750. Up to 2415 conditions per place. [2023-11-12 02:25:56,803 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-11-12 02:25:56,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 597 flow [2023-11-12 02:25:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2023-11-12 02:25:56,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140495867768596 [2023-11-12 02:25:56,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2023-11-12 02:25:56,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2023-11-12 02:25:56,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:56,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2023-11-12 02:25:56,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,815 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 699 transitions. [2023-11-12 02:25:56,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 597 flow [2023-11-12 02:25:56,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:56,826 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-11-12 02:25:56,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-12 02:25:56,827 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-12 02:25:56,828 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-11-12 02:25:56,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:56,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:56,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:56,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:25:56,829 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:56,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1570940173, now seen corresponding path program 1 times [2023-11-12 02:25:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331646610] [2023-11-12 02:25:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:57,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331646610] [2023-11-12 02:25:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331646610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328684210] [2023-11-12 02:25:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:57,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:57,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:57,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:57,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:25:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:57,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:25:57,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:57,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328684210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-12 02:25:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053058276] [2023-11-12 02:25:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:57,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:25:57,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 363 [2023-11-12 02:25:57,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:57,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 363 [2023-11-12 02:25:57,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:57,794 INFO L124 PetriNetUnfolderBase]: 1361/2424 cut-off events. [2023-11-12 02:25:57,794 INFO L125 PetriNetUnfolderBase]: For 4092/4092 co-relation queries the response was YES. [2023-11-12 02:25:57,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8223 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10941 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7506. Up to 1340 conditions per place. [2023-11-12 02:25:57,813 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-11-12 02:25:57,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 787 flow [2023-11-12 02:25:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2023-11-12 02:25:57,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719926538108356 [2023-11-12 02:25:57,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1028 transitions. [2023-11-12 02:25:57,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1028 transitions. [2023-11-12 02:25:57,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:57,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1028 transitions. [2023-11-12 02:25:57,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.33333333333334) internal successors, (1028), 6 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,828 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 1028 transitions. [2023-11-12 02:25:57,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 787 flow [2023-11-12 02:25:57,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 773 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:25:57,840 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-11-12 02:25:57,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-12 02:25:57,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-12 02:25:57,841 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-11-12 02:25:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:57,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:57,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:57,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:25:58,049 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:58,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1311665540, now seen corresponding path program 1 times [2023-11-12 02:25:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:58,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741649136] [2023-11-12 02:25:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741649136] [2023-11-12 02:25:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741649136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777255408] [2023-11-12 02:25:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:58,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:58,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:58,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 363 [2023-11-12 02:25:58,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:58,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 363 [2023-11-12 02:25:58,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:58,702 INFO L124 PetriNetUnfolderBase]: 1410/2523 cut-off events. [2023-11-12 02:25:58,702 INFO L125 PetriNetUnfolderBase]: For 4812/4812 co-relation queries the response was YES. [2023-11-12 02:25:58,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8813 conditions, 2523 events. 1410/2523 cut-off events. For 4812/4812 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11606 event pairs, 453 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8076. Up to 1388 conditions per place. [2023-11-12 02:25:58,726 INFO L140 encePairwiseOnDemand]: 354/363 looper letters, 74 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-12 02:25:58,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 848 flow [2023-11-12 02:25:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2023-11-12 02:25:58,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48622589531680444 [2023-11-12 02:25:58,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 706 transitions. [2023-11-12 02:25:58,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 706 transitions. [2023-11-12 02:25:58,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:58,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 706 transitions. [2023-11-12 02:25:58,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,740 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 4 states and 706 transitions. [2023-11-12 02:25:58,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 848 flow [2023-11-12 02:25:58,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 839 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:58,754 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 621 flow [2023-11-12 02:25:58,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-12 02:25:58,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-12 02:25:58,756 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 621 flow [2023-11-12 02:25:58,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:58,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:58,757 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-12 02:25:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:25:58,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:58,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 231081393, now seen corresponding path program 1 times [2023-11-12 02:25:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854739650] [2023-11-12 02:25:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:59,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854739650] [2023-11-12 02:25:59,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854739650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963815365] [2023-11-12 02:25:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:59,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:59,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:25:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:59,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:25:59,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:59,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963815365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:59,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-12 02:25:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142709703] [2023-11-12 02:25:59,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:59,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:25:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:25:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:25:59,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-12 02:25:59,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 621 flow. Second operand has 18 states, 18 states have (on average 164.05555555555554) internal successors, (2953), 18 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:59,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:59,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-12 02:25:59,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:00,970 INFO L124 PetriNetUnfolderBase]: 2450/4359 cut-off events. [2023-11-12 02:26:00,971 INFO L125 PetriNetUnfolderBase]: For 15358/15358 co-relation queries the response was YES. [2023-11-12 02:26:00,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15934 conditions, 4359 events. 2450/4359 cut-off events. For 15358/15358 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19542 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 14704. Up to 873 conditions per place. [2023-11-12 02:26:01,018 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-11-12 02:26:01,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 313 transitions, 2646 flow [2023-11-12 02:26:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 02:26:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-12 02:26:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3295 transitions. [2023-11-12 02:26:01,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777439466434682 [2023-11-12 02:26:01,033 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3295 transitions. [2023-11-12 02:26:01,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3295 transitions. [2023-11-12 02:26:01,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:01,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3295 transitions. [2023-11-12 02:26:01,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 173.42105263157896) internal successors, (3295), 19 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 363.0) internal successors, (7260), 20 states have internal predecessors, (7260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,068 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 363.0) internal successors, (7260), 20 states have internal predecessors, (7260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,069 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 621 flow. Second operand 19 states and 3295 transitions. [2023-11-12 02:26:01,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 313 transitions, 2646 flow [2023-11-12 02:26:01,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 313 transitions, 2644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:01,097 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 1259 flow [2023-11-12 02:26:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1259, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2023-11-12 02:26:01,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-11-12 02:26:01,098 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 1259 flow [2023-11-12 02:26:01,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.05555555555554) internal successors, (2953), 18 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:01,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:01,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:01,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:01,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:26:01,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:26:01,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:01,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1796627395, now seen corresponding path program 2 times [2023-11-12 02:26:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:01,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375480679] [2023-11-12 02:26:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:01,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:01,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375480679] [2023-11-12 02:26:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375480679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219877922] [2023-11-12 02:26:01,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:26:01,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:01,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:01,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:26:01,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:26:01,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:01,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:26:01,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:26:01,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:26:01,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219877922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:01,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:01,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-11-12 02:26:01,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202272126] [2023-11-12 02:26:01,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:01,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:26:01,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:26:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:26:02,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-12 02:26:02,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 1259 flow. Second operand has 12 states, 12 states have (on average 159.5) internal successors, (1914), 12 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:02,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:02,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-12 02:26:02,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:03,324 INFO L124 PetriNetUnfolderBase]: 3069/5448 cut-off events. [2023-11-12 02:26:03,325 INFO L125 PetriNetUnfolderBase]: For 21978/21978 co-relation queries the response was YES. [2023-11-12 02:26:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21001 conditions, 5448 events. 3069/5448 cut-off events. For 21978/21978 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 26005 event pairs, 457 based on Foata normal form. 38/5486 useless extension candidates. Maximal degree in co-relation 19562. Up to 2471 conditions per place. [2023-11-12 02:26:03,371 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 181 selfloop transitions, 64 changer transitions 0/246 dead transitions. [2023-11-12 02:26:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 246 transitions, 2605 flow [2023-11-12 02:26:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:26:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:26:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2314 transitions. [2023-11-12 02:26:03,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45533254624163716 [2023-11-12 02:26:03,382 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2314 transitions. [2023-11-12 02:26:03,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2314 transitions. [2023-11-12 02:26:03,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:03,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2314 transitions. [2023-11-12 02:26:03,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 165.28571428571428) internal successors, (2314), 14 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,404 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,404 INFO L175 Difference]: Start difference. First operand has 92 places, 105 transitions, 1259 flow. Second operand 14 states and 2314 transitions. [2023-11-12 02:26:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 246 transitions, 2605 flow [2023-11-12 02:26:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 246 transitions, 2447 flow, removed 54 selfloop flow, removed 7 redundant places. [2023-11-12 02:26:03,463 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1685 flow [2023-11-12 02:26:03,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1685, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2023-11-12 02:26:03,464 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2023-11-12 02:26:03,464 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1685 flow [2023-11-12 02:26:03,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.5) internal successors, (1914), 12 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:03,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:03,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:03,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:26:03,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:26:03,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1796627442, now seen corresponding path program 2 times [2023-11-12 02:26:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:03,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510759608] [2023-11-12 02:26:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510759608] [2023-11-12 02:26:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510759608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896519318] [2023-11-12 02:26:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-12 02:26:03,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1685 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:03,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:03,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-12 02:26:03,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:04,942 INFO L124 PetriNetUnfolderBase]: 2908/5229 cut-off events. [2023-11-12 02:26:04,942 INFO L125 PetriNetUnfolderBase]: For 22328/22328 co-relation queries the response was YES. [2023-11-12 02:26:04,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19975 conditions, 5229 events. 2908/5229 cut-off events. For 22328/22328 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 25135 event pairs, 438 based on Foata normal form. 96/5325 useless extension candidates. Maximal degree in co-relation 19683. Up to 3596 conditions per place. [2023-11-12 02:26:04,984 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 73 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2023-11-12 02:26:04,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 143 transitions, 1787 flow [2023-11-12 02:26:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:26:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:26:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1138 transitions. [2023-11-12 02:26:04,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478551751279024 [2023-11-12 02:26:04,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1138 transitions. [2023-11-12 02:26:04,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1138 transitions. [2023-11-12 02:26:04,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1138 transitions. [2023-11-12 02:26:04,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.57142857142858) internal successors, (1138), 7 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,002 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1685 flow. Second operand 7 states and 1138 transitions. [2023-11-12 02:26:05,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 143 transitions, 1787 flow [2023-11-12 02:26:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 1696 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-12 02:26:05,083 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 1408 flow [2023-11-12 02:26:05,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1408, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2023-11-12 02:26:05,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-11-12 02:26:05,084 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 1408 flow [2023-11-12 02:26:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:05,084 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:05,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:26:05,085 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:26:05,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1241219237, now seen corresponding path program 3 times [2023-11-12 02:26:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120609822] [2023-11-12 02:26:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:26:05,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:05,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120609822] [2023-11-12 02:26:05,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120609822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:05,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331921451] [2023-11-12 02:26:05,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:26:05,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:05,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:05,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:05,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:26:05,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 02:26:05,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:05,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:26:05,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:26:05,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:26:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331921451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:05,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-12 02:26:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246684395] [2023-11-12 02:26:05,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-12 02:26:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-12 02:26:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-11-12 02:26:06,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-12 02:26:06,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 1408 flow. Second operand has 20 states, 20 states have (on average 158.9) internal successors, (3178), 20 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:06,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-12 02:26:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:07,940 INFO L124 PetriNetUnfolderBase]: 3902/6991 cut-off events. [2023-11-12 02:26:07,940 INFO L125 PetriNetUnfolderBase]: For 29110/29110 co-relation queries the response was YES. [2023-11-12 02:26:07,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27003 conditions, 6991 events. 3902/6991 cut-off events. For 29110/29110 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 36012 event pairs, 477 based on Foata normal form. 64/7055 useless extension candidates. Maximal degree in co-relation 26157. Up to 1457 conditions per place. [2023-11-12 02:26:08,023 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 268 selfloop transitions, 112 changer transitions 0/381 dead transitions. [2023-11-12 02:26:08,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 381 transitions, 3883 flow [2023-11-12 02:26:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 02:26:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-12 02:26:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4268 transitions. [2023-11-12 02:26:08,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522144522144522 [2023-11-12 02:26:08,039 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4268 transitions. [2023-11-12 02:26:08,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4268 transitions. [2023-11-12 02:26:08,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:08,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4268 transitions. [2023-11-12 02:26:08,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 164.15384615384616) internal successors, (4268), 26 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 363.0) internal successors, (9801), 27 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,253 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 363.0) internal successors, (9801), 27 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,253 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 1408 flow. Second operand 26 states and 4268 transitions. [2023-11-12 02:26:08,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 381 transitions, 3883 flow [2023-11-12 02:26:08,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 381 transitions, 3746 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-12 02:26:08,398 INFO L231 Difference]: Finished difference. Result has 133 places, 158 transitions, 2321 flow [2023-11-12 02:26:08,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2321, PETRI_PLACES=133, PETRI_TRANSITIONS=158} [2023-11-12 02:26:08,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-11-12 02:26:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 158 transitions, 2321 flow [2023-11-12 02:26:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 158.9) internal successors, (3178), 20 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:08,400 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-11-12 02:26:08,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:08,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:26:08,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:26:08,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 307660793, now seen corresponding path program 2 times [2023-11-12 02:26:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:08,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234110227] [2023-11-12 02:26:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234110227] [2023-11-12 02:26:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234110227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406246746] [2023-11-12 02:26:09,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:26:09,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:09,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:09,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:26:09,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:26:09,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:26:09,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:26:09,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 02:26:09,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:26:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406246746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:26:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 23 [2023-11-12 02:26:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675981247] [2023-11-12 02:26:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:26:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:26:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:26:09,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-12 02:26:09,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 158 transitions, 2321 flow. Second operand has 8 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:09,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:09,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-12 02:26:09,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:11,720 INFO L124 PetriNetUnfolderBase]: 4693/8658 cut-off events. [2023-11-12 02:26:11,720 INFO L125 PetriNetUnfolderBase]: For 30404/30416 co-relation queries the response was YES. [2023-11-12 02:26:11,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33191 conditions, 8658 events. 4693/8658 cut-off events. For 30404/30416 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 51368 event pairs, 7 based on Foata normal form. 178/8836 useless extension candidates. Maximal degree in co-relation 33155. Up to 3205 conditions per place. [2023-11-12 02:26:11,759 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 0 selfloop transitions, 0 changer transitions 393/393 dead transitions. [2023-11-12 02:26:11,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 393 transitions, 5436 flow [2023-11-12 02:26:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:26:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:26:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1496 transitions. [2023-11-12 02:26:11,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-12 02:26:11,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1496 transitions. [2023-11-12 02:26:11,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1496 transitions. [2023-11-12 02:26:11,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:11,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1496 transitions. [2023-11-12 02:26:11,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:11,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:11,778 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:11,778 INFO L175 Difference]: Start difference. First operand has 133 places, 158 transitions, 2321 flow. Second operand 8 states and 1496 transitions. [2023-11-12 02:26:11,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 393 transitions, 5436 flow [2023-11-12 02:26:12,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 393 transitions, 4769 flow, removed 140 selfloop flow, removed 19 redundant places. [2023-11-12 02:26:12,052 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2023-11-12 02:26:12,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2023-11-12 02:26:12,053 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2023-11-12 02:26:12,053 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2023-11-12 02:26:12,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:12,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-12 02:26:12,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-12 02:26:12,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-12 02:26:12,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-12 02:26:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-12 02:26:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-12 02:26:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-12 02:26:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-12 02:26:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-12 02:26:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-12 02:26:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-12 02:26:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-12 02:26:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-12 02:26:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-12 02:26:12,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-12 02:26:12,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-12 02:26:12,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-12 02:26:12,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-12 02:26:12,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:12,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:26:12,268 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:12,272 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:26:12,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:26:12,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:26:12 BasicIcfg [2023-11-12 02:26:12,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:26:12,278 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:26:12,279 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:26:12,279 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:26:12,279 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:38" (3/4) ... [2023-11-12 02:26:12,281 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:26:12,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-12 02:26:12,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-12 02:26:12,293 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-12 02:26:12,294 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:26:12,294 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:26:12,294 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:26:12,403 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:26:12,404 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:26:12,404 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:26:12,405 INFO L158 Benchmark]: Toolchain (without parser) took 35291.83ms. Allocated memory was 157.3MB in the beginning and 830.5MB in the end (delta: 673.2MB). Free memory was 116.2MB in the beginning and 612.7MB in the end (delta: -496.5MB). Peak memory consumption was 176.2MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,406 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:12,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 896.73ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 86.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.16ms. Allocated memory is still 157.3MB. Free memory was 86.8MB in the beginning and 84.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,407 INFO L158 Benchmark]: Boogie Preprocessor took 89.81ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 128.8MB in the end (delta: -44.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,407 INFO L158 Benchmark]: RCFGBuilder took 710.03ms. Allocated memory is still 157.3MB. Free memory was 128.8MB in the beginning and 109.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,410 INFO L158 Benchmark]: TraceAbstraction took 33396.84ms. Allocated memory was 157.3MB in the beginning and 830.5MB in the end (delta: 673.2MB). Free memory was 109.9MB in the beginning and 616.9MB in the end (delta: -506.9MB). Peak memory consumption was 647.4MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,411 INFO L158 Benchmark]: Witness Printer took 125.90ms. Allocated memory is still 830.5MB. Free memory was 616.9MB in the beginning and 612.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:26:12,415 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 896.73ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 86.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.16ms. Allocated memory is still 157.3MB. Free memory was 86.8MB in the beginning and 84.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.81ms. Allocated memory is still 157.3MB. Free memory was 84.3MB in the beginning and 128.8MB in the end (delta: -44.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * RCFGBuilder took 710.03ms. Allocated memory is still 157.3MB. Free memory was 128.8MB in the beginning and 109.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 33396.84ms. Allocated memory was 157.3MB in the beginning and 830.5MB in the end (delta: 673.2MB). Free memory was 109.9MB in the beginning and 616.9MB in the end (delta: -506.9MB). Peak memory consumption was 647.4MB. Max. memory is 16.1GB. * Witness Printer took 125.90ms. Allocated memory is still 830.5MB. Free memory was 616.9MB in the beginning and 612.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 170 PlacesBefore, 42 PlacesAfterwards, 175 TransitionsBefore, 40 TransitionsAfterwards, 10672 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 111 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 7 ChoiceCompositions, 176 TotalNumberOfCompositions, 14892 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11101, independent: 10874, independent conditional: 0, independent unconditional: 10874, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6279, independent: 6228, independent conditional: 0, independent unconditional: 6228, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11101, independent: 4646, independent conditional: 0, independent unconditional: 4646, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 6279, unknown conditional: 0, unknown unconditional: 6279] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 213, Positive conditional cache size: 0, Positive unconditional cache size: 213, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 300 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.2s, OverallIterations: 18, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2248 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1911 mSDsluCounter, 804 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 703 mSDsCounter, 220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4507 IncrementalHoareTripleChecker+Invalid, 4727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 220 mSolverCounterUnsat, 101 mSDtfsCounter, 4507 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2321occurred in iteration=17, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 694 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 797 ConstructedInterpolants, 0 QuantifiedInterpolants, 2151 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2387 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 312/872 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:26:12,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2de26ed-6e15-4520-87d2-db353fc07866/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE