./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:02:20,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:02:20,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:02:20,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:02:20,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:02:20,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:02:20,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:02:20,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:02:20,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:02:20,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:02:20,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:02:20,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:02:20,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:02:20,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:02:20,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:02:20,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:02:20,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:02:20,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:02:20,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:02:20,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:02:20,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:02:20,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:02:20,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:02:20,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:02:20,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:02:20,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:02:20,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:02:20,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:02:20,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:02:20,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:02:20,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:02:20,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:02:20,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:02:20,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:02:20,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:02:20,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:02:20,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:02:20,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:02:20,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:02:20,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:02:20,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:02:20,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:02:20,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:02:20,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:02:20,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:02:20,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:02:20,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:02:20,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:02:20,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:02:20,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:02:20,250 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:02:20,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:02:20,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:02:20,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:02:20,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:02:20,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:02:20,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:02:20,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:02:20,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:02:20,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:02:20,254 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:02:20,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:02:20,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:02:20,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:02:20,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:02:20,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:02:20,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:02:20,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:02:20,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:20,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:02:20,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:02:20,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:02:20,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:02:20,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:02:20,257 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:02:20,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:02:20,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:02:20,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 [2022-11-21 17:02:20,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:02:20,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:02:20,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:02:20,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:02:20,562 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:02:20,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/fib_safe-6.i [2022-11-21 17:02:23,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:02:24,040 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:02:24,041 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/sv-benchmarks/c/pthread/fib_safe-6.i [2022-11-21 17:02:24,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/data/a72f85f60/5cab163527ca48b9916ea581543c9271/FLAGb63174802 [2022-11-21 17:02:24,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/data/a72f85f60/5cab163527ca48b9916ea581543c9271 [2022-11-21 17:02:24,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:02:24,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:02:24,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:24,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:02:24,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:02:24,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319a65b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24, skipping insertion in model container [2022-11-21 17:02:24,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:02:24,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:02:24,618 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/sv-benchmarks/c/pthread/fib_safe-6.i[30241,30254] [2022-11-21 17:02:24,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:24,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:02:24,721 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/sv-benchmarks/c/pthread/fib_safe-6.i[30241,30254] [2022-11-21 17:02:24,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:24,761 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:02:24,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24 WrapperNode [2022-11-21 17:02:24,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:24,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:24,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:02:24,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:02:24,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,835 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-21 17:02:24,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:24,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:02:24,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:02:24,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:02:24,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,880 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:02:24,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:02:24,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:02:24,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:02:24,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (1/1) ... [2022-11-21 17:02:24,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:24,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:02:24,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:02:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 17:02:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 17:02:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 17:02:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:02:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:02:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:02:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:02:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:02:24,983 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:02:25,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:02:25,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:02:25,394 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:02:25,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:02:25,456 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:02:25,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:25 BoogieIcfgContainer [2022-11-21 17:02:25,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:02:25,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:02:25,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:02:25,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:02:25,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:02:24" (1/3) ... [2022-11-21 17:02:25,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e208e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:25, skipping insertion in model container [2022-11-21 17:02:25,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:24" (2/3) ... [2022-11-21 17:02:25,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e208e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:25, skipping insertion in model container [2022-11-21 17:02:25,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:25" (3/3) ... [2022-11-21 17:02:25,479 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-11-21 17:02:25,491 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:02:25,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:02:25,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 17:02:25,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:02:25,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 17:02:25,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-21 17:02:25,757 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-21 17:02:25,758 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:25,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-21 17:02:25,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-21 17:02:25,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-21 17:02:25,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:25,792 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e01d925, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:25,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-21 17:02:25,811 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-21 17:02:25,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:25,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:25,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:25,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash 112959114, now seen corresponding path program 1 times [2022-11-21 17:02:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:25,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343200558] [2022-11-21 17:02:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:25,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:26,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343200558] [2022-11-21 17:02:26,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343200558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:26,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:26,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883055086] [2022-11-21 17:02:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:26,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:26,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:02:26,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:26,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:02:26,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:26,599 INFO L130 PetriNetUnfolder]: 81/446 cut-off events. [2022-11-21 17:02:26,600 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 17:02:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 446 events. 81/446 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2407 event pairs, 33 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 544. Up to 81 conditions per place. [2022-11-21 17:02:26,610 INFO L137 encePairwiseOnDemand]: 108/120 looper letters, 19 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-21 17:02:26,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 305 flow [2022-11-21 17:02:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:02:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-21 17:02:26,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-21 17:02:26,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-21 17:02:26,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-21 17:02:26,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:26,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-21 17:02:26,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,650 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 242 flow. Second operand 4 states and 448 transitions. [2022-11-21 17:02:26,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 305 flow [2022-11-21 17:02:26,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:02:26,661 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 261 flow [2022-11-21 17:02:26,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-11-21 17:02:26,668 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-11-21 17:02:26,668 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 261 flow [2022-11-21 17:02:26,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:26,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:26,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:02:26,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1179537421, now seen corresponding path program 1 times [2022-11-21 17:02:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:26,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194926420] [2022-11-21 17:02:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194926420] [2022-11-21 17:02:26,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194926420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:26,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:26,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698623429] [2022-11-21 17:02:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:26,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:26,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:26,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:26,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:27,072 INFO L130 PetriNetUnfolder]: 109/314 cut-off events. [2022-11-21 17:02:27,072 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-11-21 17:02:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 314 events. 109/314 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1518 event pairs, 13 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 620. Up to 109 conditions per place. [2022-11-21 17:02:27,082 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 32 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-21 17:02:27,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 385 flow [2022-11-21 17:02:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-11-21 17:02:27,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783333333333333 [2022-11-21 17:02:27,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-11-21 17:02:27,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-11-21 17:02:27,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:27,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-11-21 17:02:27,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,092 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 261 flow. Second operand 5 states and 527 transitions. [2022-11-21 17:02:27,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 385 flow [2022-11-21 17:02:27,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:02:27,096 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 293 flow [2022-11-21 17:02:27,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2022-11-21 17:02:27,097 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-11-21 17:02:27,098 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 293 flow [2022-11-21 17:02:27,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:27,099 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:02:27,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 652098173, now seen corresponding path program 1 times [2022-11-21 17:02:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:27,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113926127] [2022-11-21 17:02:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:27,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:27,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113926127] [2022-11-21 17:02:27,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113926127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815130115] [2022-11-21 17:02:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:27,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:27,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:27,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:02:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:02:27,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:27,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:27,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815130115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:27,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:27,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-21 17:02:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373672975] [2022-11-21 17:02:27,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:02:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:02:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:02:27,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:02:27,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:27,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:02:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:28,228 INFO L130 PetriNetUnfolder]: 235/1253 cut-off events. [2022-11-21 17:02:28,228 INFO L131 PetriNetUnfolder]: For 156/169 co-relation queries the response was YES. [2022-11-21 17:02:28,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1253 events. 235/1253 cut-off events. For 156/169 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9649 event pairs, 23 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2072. Up to 245 conditions per place. [2022-11-21 17:02:28,248 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 48 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2022-11-21 17:02:28,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 731 flow [2022-11-21 17:02:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:02:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:02:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2022-11-21 17:02:28,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-21 17:02:28,254 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2022-11-21 17:02:28,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2022-11-21 17:02:28,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:28,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2022-11-21 17:02:28,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,269 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,269 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 293 flow. Second operand 18 states and 1944 transitions. [2022-11-21 17:02:28,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 192 transitions, 731 flow [2022-11-21 17:02:28,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:28,281 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 685 flow [2022-11-21 17:02:28,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=685, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2022-11-21 17:02:28,283 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-21 17:02:28,283 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 685 flow [2022-11-21 17:02:28,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:28,286 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:28,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:28,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:28,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:28,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash 652098174, now seen corresponding path program 1 times [2022-11-21 17:02:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:28,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909200503] [2022-11-21 17:02:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909200503] [2022-11-21 17:02:28,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909200503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:28,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588311966] [2022-11-21 17:02:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:28,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:28,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:28,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:02:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:28,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:02:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:28,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:28,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588311966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:28,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:28,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-21 17:02:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248441865] [2022-11-21 17:02:28,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:28,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:02:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:28,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:02:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:02:28,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:02:28,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:28,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:28,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:02:28,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:29,117 INFO L130 PetriNetUnfolder]: 113/831 cut-off events. [2022-11-21 17:02:29,118 INFO L131 PetriNetUnfolder]: For 2930/2991 co-relation queries the response was YES. [2022-11-21 17:02:29,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 831 events. 113/831 cut-off events. For 2930/2991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5767 event pairs, 28 based on Foata normal form. 91/812 useless extension candidates. Maximal degree in co-relation 1826. Up to 99 conditions per place. [2022-11-21 17:02:29,132 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 23 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2022-11-21 17:02:29,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 618 flow [2022-11-21 17:02:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2022-11-21 17:02:29,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-21 17:02:29,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2022-11-21 17:02:29,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2022-11-21 17:02:29,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:29,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2022-11-21 17:02:29,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,140 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 685 flow. Second operand 5 states and 531 transitions. [2022-11-21 17:02:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 618 flow [2022-11-21 17:02:29,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 533 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-21 17:02:29,153 INFO L231 Difference]: Finished difference. Result has 143 places, 136 transitions, 478 flow [2022-11-21 17:02:29,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=143, PETRI_TRANSITIONS=136} [2022-11-21 17:02:29,154 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2022-11-21 17:02:29,154 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 478 flow [2022-11-21 17:02:29,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:29,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:29,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 17:02:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-21 17:02:29,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash -82011894, now seen corresponding path program 1 times [2022-11-21 17:02:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012023317] [2022-11-21 17:02:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012023317] [2022-11-21 17:02:29,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012023317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:29,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:29,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708748481] [2022-11-21 17:02:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:29,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:29,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:29,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 136 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:29,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:29,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:29,725 INFO L130 PetriNetUnfolder]: 168/711 cut-off events. [2022-11-21 17:02:29,725 INFO L131 PetriNetUnfolder]: For 1690/1794 co-relation queries the response was YES. [2022-11-21 17:02:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 711 events. 168/711 cut-off events. For 1690/1794 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4448 event pairs, 36 based on Foata normal form. 18/664 useless extension candidates. Maximal degree in co-relation 1965. Up to 197 conditions per place. [2022-11-21 17:02:29,744 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 62 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-21 17:02:29,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 797 flow [2022-11-21 17:02:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-21 17:02:29,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2022-11-21 17:02:29,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-21 17:02:29,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-21 17:02:29,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:29,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-21 17:02:29,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 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) [2022-11-21 17:02:29,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,750 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,750 INFO L175 Difference]: Start difference. First operand has 143 places, 136 transitions, 478 flow. Second operand 5 states and 518 transitions. [2022-11-21 17:02:29,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 797 flow [2022-11-21 17:02:29,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:02:29,757 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 507 flow [2022-11-21 17:02:29,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-11-21 17:02:29,758 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-11-21 17:02:29,759 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 507 flow [2022-11-21 17:02:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:29,759 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:02:29,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash -398869696, now seen corresponding path program 1 times [2022-11-21 17:02:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:29,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848910040] [2022-11-21 17:02:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:02:29,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:29,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848910040] [2022-11-21 17:02:29,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848910040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:29,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:29,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:29,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240683214] [2022-11-21 17:02:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:29,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:29,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:29,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:29,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:29,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:29,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:29,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:30,007 INFO L130 PetriNetUnfolder]: 184/634 cut-off events. [2022-11-21 17:02:30,008 INFO L131 PetriNetUnfolder]: For 1633/1770 co-relation queries the response was YES. [2022-11-21 17:02:30,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 634 events. 184/634 cut-off events. For 1633/1770 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4045 event pairs, 26 based on Foata normal form. 33/617 useless extension candidates. Maximal degree in co-relation 2000. Up to 138 conditions per place. [2022-11-21 17:02:30,027 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2022-11-21 17:02:30,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 166 transitions, 855 flow [2022-11-21 17:02:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2022-11-21 17:02:30,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-21 17:02:30,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2022-11-21 17:02:30,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2022-11-21 17:02:30,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:30,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2022-11-21 17:02:30,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,038 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 507 flow. Second operand 5 states and 512 transitions. [2022-11-21 17:02:30,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 166 transitions, 855 flow [2022-11-21 17:02:30,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 166 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:30,047 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 525 flow [2022-11-21 17:02:30,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2022-11-21 17:02:30,050 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2022-11-21 17:02:30,051 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 525 flow [2022-11-21 17:02:30,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:30,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:30,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:02:30,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1768695099, now seen corresponding path program 1 times [2022-11-21 17:02:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:30,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088845017] [2022-11-21 17:02:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:30,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088845017] [2022-11-21 17:02:30,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088845017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:30,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:30,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768315635] [2022-11-21 17:02:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:30,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:30,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2022-11-21 17:02:30,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:30,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2022-11-21 17:02:30,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:30,735 INFO L130 PetriNetUnfolder]: 713/2625 cut-off events. [2022-11-21 17:02:30,735 INFO L131 PetriNetUnfolder]: For 5825/6193 co-relation queries the response was YES. [2022-11-21 17:02:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 2625 events. 713/2625 cut-off events. For 5825/6193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22638 event pairs, 104 based on Foata normal form. 36/2406 useless extension candidates. Maximal degree in co-relation 7202. Up to 593 conditions per place. [2022-11-21 17:02:30,790 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 86 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-21 17:02:30,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 193 transitions, 1085 flow [2022-11-21 17:02:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:02:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-11-21 17:02:30,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791666666666667 [2022-11-21 17:02:30,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-11-21 17:02:30,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-11-21 17:02:30,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:30,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-11-21 17:02:30,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,800 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 525 flow. Second operand 4 states and 422 transitions. [2022-11-21 17:02:30,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 193 transitions, 1085 flow [2022-11-21 17:02:30,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:02:30,815 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 539 flow [2022-11-21 17:02:30,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-11-21 17:02:30,816 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-21 17:02:30,817 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 539 flow [2022-11-21 17:02:30,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:30,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:30,817 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:02:30,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash 519941638, now seen corresponding path program 1 times [2022-11-21 17:02:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:30,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855789851] [2022-11-21 17:02:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855789851] [2022-11-21 17:02:30,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855789851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597634620] [2022-11-21 17:02:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:30,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:30,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:30,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:31,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:02:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:31,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:02:31,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:31,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:31,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597634620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:31,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:31,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:02:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292773126] [2022-11-21 17:02:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:31,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:02:31,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:02:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:02:31,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:31,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:31,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:31,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:31,432 INFO L130 PetriNetUnfolder]: 180/725 cut-off events. [2022-11-21 17:02:31,432 INFO L131 PetriNetUnfolder]: For 1792/1908 co-relation queries the response was YES. [2022-11-21 17:02:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 725 events. 180/725 cut-off events. For 1792/1908 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4811 event pairs, 30 based on Foata normal form. 23/700 useless extension candidates. Maximal degree in co-relation 2181. Up to 136 conditions per place. [2022-11-21 17:02:31,456 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 62 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-21 17:02:31,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 169 transitions, 883 flow [2022-11-21 17:02:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:02:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:02:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 715 transitions. [2022-11-21 17:02:31,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-11-21 17:02:31,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 715 transitions. [2022-11-21 17:02:31,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 715 transitions. [2022-11-21 17:02:31,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:31,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 715 transitions. [2022-11-21 17:02:31,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,465 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 539 flow. Second operand 7 states and 715 transitions. [2022-11-21 17:02:31,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 169 transitions, 883 flow [2022-11-21 17:02:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 169 transitions, 881 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:31,474 INFO L231 Difference]: Finished difference. Result has 157 places, 140 transitions, 545 flow [2022-11-21 17:02:31,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2022-11-21 17:02:31,478 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-21 17:02:31,478 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 545 flow [2022-11-21 17:02:31,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:31,479 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:31,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:31,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1863821652, now seen corresponding path program 1 times [2022-11-21 17:02:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:31,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401929744] [2022-11-21 17:02:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:31,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:02:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401929744] [2022-11-21 17:02:31,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401929744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:31,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:31,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334238323] [2022-11-21 17:02:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:31,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:31,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:31,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:31,945 INFO L130 PetriNetUnfolder]: 155/639 cut-off events. [2022-11-21 17:02:31,946 INFO L131 PetriNetUnfolder]: For 1661/1773 co-relation queries the response was YES. [2022-11-21 17:02:31,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 639 events. 155/639 cut-off events. For 1661/1773 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3865 event pairs, 25 based on Foata normal form. 31/638 useless extension candidates. Maximal degree in co-relation 1926. Up to 133 conditions per place. [2022-11-21 17:02:31,970 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-21 17:02:31,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 884 flow [2022-11-21 17:02:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2022-11-21 17:02:31,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8483333333333334 [2022-11-21 17:02:31,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2022-11-21 17:02:31,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2022-11-21 17:02:31,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:31,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2022-11-21 17:02:31,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,977 INFO L175 Difference]: Start difference. First operand has 157 places, 140 transitions, 545 flow. Second operand 5 states and 509 transitions. [2022-11-21 17:02:31,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 884 flow [2022-11-21 17:02:31,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 873 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:02:31,986 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 554 flow [2022-11-21 17:02:31,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2022-11-21 17:02:31,988 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-11-21 17:02:31,988 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 554 flow [2022-11-21 17:02:31,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:31,989 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:31,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:02:31,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1943896707, now seen corresponding path program 1 times [2022-11-21 17:02:31,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:31,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701503617] [2022-11-21 17:02:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:32,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:32,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701503617] [2022-11-21 17:02:32,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701503617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:32,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054606514] [2022-11-21 17:02:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:32,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:32,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:32,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:32,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:02:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:32,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:02:32,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:32,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:32,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054606514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:32,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:32,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-21 17:02:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818152441] [2022-11-21 17:02:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:02:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:02:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:02:32,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:32,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:32,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:32,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:32,451 INFO L130 PetriNetUnfolder]: 148/585 cut-off events. [2022-11-21 17:02:32,451 INFO L131 PetriNetUnfolder]: For 1504/1605 co-relation queries the response was YES. [2022-11-21 17:02:32,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 585 events. 148/585 cut-off events. For 1504/1605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3325 event pairs, 29 based on Foata normal form. 23/572 useless extension candidates. Maximal degree in co-relation 1819. Up to 150 conditions per place. [2022-11-21 17:02:32,472 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 43 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-21 17:02:32,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 715 flow [2022-11-21 17:02:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:02:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2022-11-21 17:02:32,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-21 17:02:32,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2022-11-21 17:02:32,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2022-11-21 17:02:32,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:32,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2022-11-21 17:02:32,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,478 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,478 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 554 flow. Second operand 4 states and 407 transitions. [2022-11-21 17:02:32,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 715 flow [2022-11-21 17:02:32,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:02:32,486 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 548 flow [2022-11-21 17:02:32,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-21 17:02:32,488 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2022-11-21 17:02:32,488 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 548 flow [2022-11-21 17:02:32,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:32,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:32,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:32,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:02:32,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1261891889, now seen corresponding path program 1 times [2022-11-21 17:02:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:32,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925557471] [2022-11-21 17:02:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:32,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925557471] [2022-11-21 17:02:32,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925557471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:32,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:32,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:32,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164489355] [2022-11-21 17:02:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:32,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:32,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:32,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-21 17:02:32,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:32,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-21 17:02:32,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:33,281 INFO L130 PetriNetUnfolder]: 844/2627 cut-off events. [2022-11-21 17:02:33,281 INFO L131 PetriNetUnfolder]: For 6060/6426 co-relation queries the response was YES. [2022-11-21 17:02:33,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2627 events. 844/2627 cut-off events. For 6060/6426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21451 event pairs, 86 based on Foata normal form. 12/2393 useless extension candidates. Maximal degree in co-relation 7634. Up to 664 conditions per place. [2022-11-21 17:02:33,315 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 112 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-21 17:02:33,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 1344 flow [2022-11-21 17:02:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-21 17:02:33,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-21 17:02:33,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-21 17:02:33,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-21 17:02:33,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:33,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-21 17:02:33,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:33,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:33,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:33,324 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 548 flow. Second operand 5 states and 516 transitions. [2022-11-21 17:02:33,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 1344 flow [2022-11-21 17:02:33,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:02:33,338 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 570 flow [2022-11-21 17:02:33,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-21 17:02:33,339 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2022-11-21 17:02:33,339 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 570 flow [2022-11-21 17:02:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:33,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:33,340 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:02:33,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 831417940, now seen corresponding path program 1 times [2022-11-21 17:02:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:33,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737546921] [2022-11-21 17:02:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:33,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737546921] [2022-11-21 17:02:33,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737546921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:33,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850819447] [2022-11-21 17:02:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:33,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:33,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:33,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:33,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:02:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:33,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:02:33,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:33,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:34,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850819447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:34,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:34,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-21 17:02:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910402459] [2022-11-21 17:02:34,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:02:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:02:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:02:34,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:34,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:34,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:34,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:34,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:35,242 INFO L130 PetriNetUnfolder]: 1218/4514 cut-off events. [2022-11-21 17:02:35,243 INFO L131 PetriNetUnfolder]: For 7970/8507 co-relation queries the response was YES. [2022-11-21 17:02:35,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 4514 events. 1218/4514 cut-off events. For 7970/8507 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42178 event pairs, 80 based on Foata normal form. 78/4332 useless extension candidates. Maximal degree in co-relation 11661. Up to 690 conditions per place. [2022-11-21 17:02:35,306 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 211 selfloop transitions, 11 changer transitions 0/325 dead transitions. [2022-11-21 17:02:35,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 325 transitions, 2340 flow [2022-11-21 17:02:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:02:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:02:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-11-21 17:02:35,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853030303030303 [2022-11-21 17:02:35,311 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-11-21 17:02:35,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-11-21 17:02:35,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:35,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-11-21 17:02:35,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,400 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,400 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 570 flow. Second operand 11 states and 1126 transitions. [2022-11-21 17:02:35,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 325 transitions, 2340 flow [2022-11-21 17:02:35,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 2338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:35,425 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 625 flow [2022-11-21 17:02:35,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-11-21 17:02:35,426 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 54 predicate places. [2022-11-21 17:02:35,426 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 625 flow [2022-11-21 17:02:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:35,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:35,428 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:35,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:35,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 17:02:35,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash 4152592, now seen corresponding path program 1 times [2022-11-21 17:02:35,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:35,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868402649] [2022-11-21 17:02:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:35,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868402649] [2022-11-21 17:02:35,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868402649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116247875] [2022-11-21 17:02:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:35,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:35,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:35,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:02:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:35,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:02:35,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:36,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:36,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116247875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:36,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:36,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-21 17:02:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050857957] [2022-11-21 17:02:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:36,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:02:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:02:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:02:36,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:36,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:36,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:36,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:36,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:37,178 INFO L130 PetriNetUnfolder]: 1071/4238 cut-off events. [2022-11-21 17:02:37,178 INFO L131 PetriNetUnfolder]: For 7379/7850 co-relation queries the response was YES. [2022-11-21 17:02:37,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 4238 events. 1071/4238 cut-off events. For 7379/7850 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39183 event pairs, 56 based on Foata normal form. 100/4093 useless extension candidates. Maximal degree in co-relation 11014. Up to 1302 conditions per place. [2022-11-21 17:02:37,247 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 90 selfloop transitions, 4 changer transitions 0/197 dead transitions. [2022-11-21 17:02:37,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 1189 flow [2022-11-21 17:02:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:02:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:02:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 611 transitions. [2022-11-21 17:02:37,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486111111111111 [2022-11-21 17:02:37,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 611 transitions. [2022-11-21 17:02:37,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 611 transitions. [2022-11-21 17:02:37,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:37,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 611 transitions. [2022-11-21 17:02:37,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:37,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:37,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:37,257 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 625 flow. Second operand 6 states and 611 transitions. [2022-11-21 17:02:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 1189 flow [2022-11-21 17:02:37,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 1173 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:37,277 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 623 flow [2022-11-21 17:02:37,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-21 17:02:37,279 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 55 predicate places. [2022-11-21 17:02:37,279 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 623 flow [2022-11-21 17:02:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:37,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:37,280 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:37,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:37,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:37,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash -866080606, now seen corresponding path program 1 times [2022-11-21 17:02:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040069464] [2022-11-21 17:02:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040069464] [2022-11-21 17:02:37,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040069464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:37,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95244586] [2022-11-21 17:02:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:37,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:37,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:37,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:02:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:37,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:02:37,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:37,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:38,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95244586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:38,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:38,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-21 17:02:38,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425985168] [2022-11-21 17:02:38,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:02:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:02:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:02:38,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:02:38,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 623 flow. Second operand has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:38,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:38,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:02:38,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:39,492 INFO L130 PetriNetUnfolder]: 559/2830 cut-off events. [2022-11-21 17:02:39,492 INFO L131 PetriNetUnfolder]: For 12042/12379 co-relation queries the response was YES. [2022-11-21 17:02:39,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 2830 events. 559/2830 cut-off events. For 12042/12379 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26979 event pairs, 28 based on Foata normal form. 286/2964 useless extension candidates. Maximal degree in co-relation 7753. Up to 368 conditions per place. [2022-11-21 17:02:39,546 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 50 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2022-11-21 17:02:39,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 1347 flow [2022-11-21 17:02:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 17:02:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-21 17:02:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2871 transitions. [2022-11-21 17:02:39,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2022-11-21 17:02:39,557 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2871 transitions. [2022-11-21 17:02:39,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2871 transitions. [2022-11-21 17:02:39,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:39,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2871 transitions. [2022-11-21 17:02:39,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 106.33333333333333) internal successors, (2871), 27 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:39,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:39,577 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:39,577 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 623 flow. Second operand 27 states and 2871 transitions. [2022-11-21 17:02:39,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 1347 flow [2022-11-21 17:02:39,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 222 transitions, 1338 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 17:02:39,601 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1156 flow [2022-11-21 17:02:39,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1156, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2022-11-21 17:02:39,603 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 91 predicate places. [2022-11-21 17:02:39,603 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1156 flow [2022-11-21 17:02:39,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:39,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:39,604 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:39,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:39,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:02:39,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 751591720, now seen corresponding path program 1 times [2022-11-21 17:02:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:39,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410932198] [2022-11-21 17:02:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:02:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:39,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410932198] [2022-11-21 17:02:39,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410932198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:39,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:39,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432238743] [2022-11-21 17:02:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:39,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:39,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-21 17:02:39,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:39,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:39,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-21 17:02:39,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:42,655 INFO L130 PetriNetUnfolder]: 2877/10782 cut-off events. [2022-11-21 17:02:42,655 INFO L131 PetriNetUnfolder]: For 66444/68147 co-relation queries the response was YES. [2022-11-21 17:02:42,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 10782 events. 2877/10782 cut-off events. For 66444/68147 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 118481 event pairs, 378 based on Foata normal form. 134/10498 useless extension candidates. Maximal degree in co-relation 35871. Up to 2014 conditions per place. [2022-11-21 17:02:42,806 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 241 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-21 17:02:42,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 357 transitions, 3530 flow [2022-11-21 17:02:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-11-21 17:02:42,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-21 17:02:42,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-11-21 17:02:42,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-11-21 17:02:42,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:42,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-11-21 17:02:42,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 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) [2022-11-21 17:02:42,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:42,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:42,813 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1156 flow. Second operand 5 states and 508 transitions. [2022-11-21 17:02:42,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 357 transitions, 3530 flow [2022-11-21 17:02:42,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 357 transitions, 3083 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-11-21 17:02:42,980 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1035 flow [2022-11-21 17:02:42,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2022-11-21 17:02:42,983 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 87 predicate places. [2022-11-21 17:02:42,983 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1035 flow [2022-11-21 17:02:42,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:43,002 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:02:43,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1824507043, now seen corresponding path program 1 times [2022-11-21 17:02:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090569463] [2022-11-21 17:02:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:43,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:43,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090569463] [2022-11-21 17:02:43,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090569463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:43,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678860390] [2022-11-21 17:02:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:43,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:43,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:02:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:43,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:02:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:43,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:43,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678860390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:43,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:43,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-21 17:02:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977973517] [2022-11-21 17:02:43,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:43,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:02:43,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:43,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:02:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:02:43,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-21 17:02:43,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:43,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-21 17:02:43,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:45,571 INFO L130 PetriNetUnfolder]: 2705/10078 cut-off events. [2022-11-21 17:02:45,571 INFO L131 PetriNetUnfolder]: For 69078/70200 co-relation queries the response was YES. [2022-11-21 17:02:45,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34798 conditions, 10078 events. 2705/10078 cut-off events. For 69078/70200 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 109601 event pairs, 715 based on Foata normal form. 134/9852 useless extension candidates. Maximal degree in co-relation 34705. Up to 1966 conditions per place. [2022-11-21 17:02:45,686 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 127 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2022-11-21 17:02:45,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 240 transitions, 1819 flow [2022-11-21 17:02:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:02:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-21 17:02:45,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-21 17:02:45,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-21 17:02:45,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-21 17:02:45,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:45,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-21 17:02:45,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:45,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:45,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:45,691 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1035 flow. Second operand 4 states and 405 transitions. [2022-11-21 17:02:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 240 transitions, 1819 flow [2022-11-21 17:02:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 240 transitions, 1797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:45,815 INFO L231 Difference]: Finished difference. Result has 203 places, 182 transitions, 1022 flow [2022-11-21 17:02:45,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=203, PETRI_TRANSITIONS=182} [2022-11-21 17:02:45,816 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 85 predicate places. [2022-11-21 17:02:45,816 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 182 transitions, 1022 flow [2022-11-21 17:02:45,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:45,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:45,816 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:45,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:02:46,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash 956941888, now seen corresponding path program 1 times [2022-11-21 17:02:46,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:46,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965015386] [2022-11-21 17:02:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:46,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:46,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965015386] [2022-11-21 17:02:46,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965015386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307437103] [2022-11-21 17:02:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:46,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:46,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:46,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:46,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:02:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:46,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:02:46,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307437103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:46,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:46,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-21 17:02:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129618472] [2022-11-21 17:02:46,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:02:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:02:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:02:47,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:02:47,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 182 transitions, 1022 flow. Second operand has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:47,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:47,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:02:47,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:50,094 INFO L130 PetriNetUnfolder]: 1044/6317 cut-off events. [2022-11-21 17:02:50,095 INFO L131 PetriNetUnfolder]: For 102376/102929 co-relation queries the response was YES. [2022-11-21 17:02:50,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 6317 events. 1044/6317 cut-off events. For 102376/102929 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 73063 event pairs, 32 based on Foata normal form. 618/6612 useless extension candidates. Maximal degree in co-relation 18249. Up to 628 conditions per place. [2022-11-21 17:02:50,182 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 68 selfloop transitions, 157 changer transitions 0/338 dead transitions. [2022-11-21 17:02:50,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 338 transitions, 2798 flow [2022-11-21 17:02:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 17:02:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 17:02:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4778 transitions. [2022-11-21 17:02:50,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848148148148148 [2022-11-21 17:02:50,192 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4778 transitions. [2022-11-21 17:02:50,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4778 transitions. [2022-11-21 17:02:50,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:50,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4778 transitions. [2022-11-21 17:02:50,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 106.17777777777778) internal successors, (4778), 45 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,217 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,218 INFO L175 Difference]: Start difference. First operand has 203 places, 182 transitions, 1022 flow. Second operand 45 states and 4778 transitions. [2022-11-21 17:02:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 338 transitions, 2798 flow [2022-11-21 17:02:50,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 338 transitions, 2760 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-21 17:02:50,310 INFO L231 Difference]: Finished difference. Result has 262 places, 285 transitions, 2583 flow [2022-11-21 17:02:50,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2583, PETRI_PLACES=262, PETRI_TRANSITIONS=285} [2022-11-21 17:02:50,311 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 144 predicate places. [2022-11-21 17:02:50,311 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 285 transitions, 2583 flow [2022-11-21 17:02:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:50,312 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:50,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:50,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:02:50,518 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:02:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1322986484, now seen corresponding path program 2 times [2022-11-21 17:02:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:50,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431942932] [2022-11-21 17:02:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:50,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431942932] [2022-11-21 17:02:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431942932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410096600] [2022-11-21 17:02:50,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:02:50,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:50,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:50,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:02:50,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:02:50,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:02:50,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:02:50,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:51,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410096600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:51,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:51,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-21 17:02:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295954314] [2022-11-21 17:02:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:51,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 17:02:51,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 17:02:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 17:02:51,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-21 17:02:51,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 285 transitions, 2583 flow. Second operand has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:51,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:51,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-21 17:02:51,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:05,111 INFO L130 PetriNetUnfolder]: 11112/45860 cut-off events. [2022-11-21 17:03:05,111 INFO L131 PetriNetUnfolder]: For 290793/295203 co-relation queries the response was YES. [2022-11-21 17:03:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146290 conditions, 45860 events. 11112/45860 cut-off events. For 290793/295203 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 618881 event pairs, 408 based on Foata normal form. 588/45035 useless extension candidates. Maximal degree in co-relation 146172. Up to 6934 conditions per place. [2022-11-21 17:03:06,102 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3413 dead transitions. [2022-11-21 17:03:06,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3413 transitions, 47563 flow [2022-11-21 17:03:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:03:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-21 17:03:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2349 transitions. [2022-11-21 17:03:06,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8510869565217392 [2022-11-21 17:03:06,114 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2349 transitions. [2022-11-21 17:03:06,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2349 transitions. [2022-11-21 17:03:06,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:06,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2349 transitions. [2022-11-21 17:03:06,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.1304347826087) internal successors, (2349), 23 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,124 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,125 INFO L175 Difference]: Start difference. First operand has 262 places, 285 transitions, 2583 flow. Second operand 23 states and 2349 transitions. [2022-11-21 17:03:06,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3413 transitions, 47563 flow [2022-11-21 17:03:06,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 3413 transitions, 42696 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-11-21 17:03:06,733 INFO L231 Difference]: Finished difference. Result has 274 places, 298 transitions, 2485 flow [2022-11-21 17:03:06,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2485, PETRI_PLACES=274, PETRI_TRANSITIONS=298} [2022-11-21 17:03:06,734 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 156 predicate places. [2022-11-21 17:03:06,734 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 298 transitions, 2485 flow [2022-11-21 17:03:06,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:06,735 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:06,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:06,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:03:06,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:03:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 738930051, now seen corresponding path program 2 times [2022-11-21 17:03:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:06,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363679389] [2022-11-21 17:03:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363679389] [2022-11-21 17:03:07,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363679389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268355548] [2022-11-21 17:03:07,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:03:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:07,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:07,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:03:07,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:03:07,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:03:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:03:07,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:07,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:07,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268355548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:07,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:07,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-21 17:03:07,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115590713] [2022-11-21 17:03:07,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 17:03:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 17:03:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:03:07,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:03:07,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 298 transitions, 2485 flow. Second operand has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:07,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:07,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:03:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:03:17,180 INFO L130 PetriNetUnfolder]: 3810/23013 cut-off events. [2022-11-21 17:03:17,180 INFO L131 PetriNetUnfolder]: For 778583/780559 co-relation queries the response was YES. [2022-11-21 17:03:17,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74758 conditions, 23013 events. 3810/23013 cut-off events. For 778583/780559 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 329528 event pairs, 96 based on Foata normal form. 1061/22624 useless extension candidates. Maximal degree in co-relation 74634. Up to 2009 conditions per place. [2022-11-21 17:03:17,610 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 106 selfloop transitions, 284 changer transitions 0/516 dead transitions. [2022-11-21 17:03:17,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 516 transitions, 5476 flow [2022-11-21 17:03:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-21 17:03:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-21 17:03:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5819 transitions. [2022-11-21 17:03:17,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816666666666667 [2022-11-21 17:03:17,621 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5819 transitions. [2022-11-21 17:03:17,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5819 transitions. [2022-11-21 17:03:17,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:03:17,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5819 transitions. [2022-11-21 17:03:17,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 105.8) internal successors, (5819), 55 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:17,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:17,651 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:17,651 INFO L175 Difference]: Start difference. First operand has 274 places, 298 transitions, 2485 flow. Second operand 55 states and 5819 transitions. [2022-11-21 17:03:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 516 transitions, 5476 flow [2022-11-21 17:03:18,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 516 transitions, 5394 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-21 17:03:18,267 INFO L231 Difference]: Finished difference. Result has 331 places, 446 transitions, 4979 flow [2022-11-21 17:03:18,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4979, PETRI_PLACES=331, PETRI_TRANSITIONS=446} [2022-11-21 17:03:18,268 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 213 predicate places. [2022-11-21 17:03:18,269 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 446 transitions, 4979 flow [2022-11-21 17:03:18,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:18,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:03:18,270 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:18,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-21 17:03:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:18,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-21 17:03:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash 789398012, now seen corresponding path program 1 times [2022-11-21 17:03:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:18,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832738183] [2022-11-21 17:03:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:18,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832738183] [2022-11-21 17:03:18,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832738183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:18,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121625390] [2022-11-21 17:03:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:18,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:18,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:18,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddac6cd-543c-45bc-8ba2-7b69f4ed1a1b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:03:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:18,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:03:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:19,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:19,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121625390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:19,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:19,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-21 17:03:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91489857] [2022-11-21 17:03:19,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:19,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:03:19,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:03:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:03:19,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-21 17:03:19,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 446 transitions, 4979 flow. Second operand has 26 states, 26 states have (on average 103.34615384615384) internal successors, (2687), 26 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:19,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:03:19,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-21 17:03:19,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand