./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8 --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- 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-2329fc7 [2022-12-13 14:39:27,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:39:27,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:39:27,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:39:27,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:39:27,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:39:27,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:39:27,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:39:27,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:39:27,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:39:27,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:39:27,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:39:27,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:39:27,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:39:27,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:39:27,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:39:27,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:39:27,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:39:27,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:39:27,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:39:27,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:39:27,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:39:27,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:39:27,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:39:27,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:39:27,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:39:27,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:39:27,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:39:27,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:39:28,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:39:28,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:39:28,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:39:28,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:39:28,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:39:28,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:39:28,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:39:28,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:39:28,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:39:28,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:39:28,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:39:28,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:39:28,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 14:39:28,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:39:28,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:39:28,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:39:28,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:39:28,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:39:28,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:39:28,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:39:28,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:39:28,028 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:39:28,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:39:28,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:39:28,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:39:28,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:39:28,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:39:28,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:39:28,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:39:28,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:39:28,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:39:28,037 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:39:28,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:39:28,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:39:28,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:39:28,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:39:28,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:39:28,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:39:28,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:39:28,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:39:28,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:39:28,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:39:28,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:39:28,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:39:28,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:39:28,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:39:28,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:39:28,040 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:39:28,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:39:28,040 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:39:28,040 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-12-13 14:39:28,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:39:28,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:39:28,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:39:28,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:39:28,235 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:39:28,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-13 14:39:30,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:39:30,961 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:39:30,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-13 14:39:30,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/data/8b24cbe4a/5c33119b82f04e7a8e263fa3b5bd1e15/FLAG880bba64f [2022-12-13 14:39:30,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/data/8b24cbe4a/5c33119b82f04e7a8e263fa3b5bd1e15 [2022-12-13 14:39:30,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:39:30,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:39:30,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:39:30,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:39:30,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:39:30,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:39:30" (1/1) ... [2022-12-13 14:39:30,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bfac8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:30, skipping insertion in model container [2022-12-13 14:39:30,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:39:30" (1/1) ... [2022-12-13 14:39:30,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:39:31,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:39:31,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,157 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_44723e7a-5ddc-473e-b7fb-121785281176/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-13 14:39:31,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:39:31,168 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:39:31,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:39:31,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:39:31,193 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_44723e7a-5ddc-473e-b7fb-121785281176/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-13 14:39:31,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:39:31,205 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:39:31,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31 WrapperNode [2022-12-13 14:39:31,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:39:31,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:39:31,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:39:31,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:39:31,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,240 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 349 [2022-12-13 14:39:31,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:39:31,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:39:31,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:39:31,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:39:31,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:39:31,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:39:31,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:39:31,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:39:31,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (1/1) ... [2022-12-13 14:39:31,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:39:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:31,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:39:31,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:39:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:39:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:39:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:39:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:39:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 14:39:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:39:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:39:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:39:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:39:31,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:39:31,435 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:39:31,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:39:31,810 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:39:31,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:39:31,976 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 14:39:31,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:39:31 BoogieIcfgContainer [2022-12-13 14:39:31,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:39:31,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:39:31,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:39:31,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:39:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:39:30" (1/3) ... [2022-12-13 14:39:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3e2da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:39:31, skipping insertion in model container [2022-12-13 14:39:31,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:31" (2/3) ... [2022-12-13 14:39:31,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3e2da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:39:31, skipping insertion in model container [2022-12-13 14:39:31,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:39:31" (3/3) ... [2022-12-13 14:39:31,986 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-12-13 14:39:31,993 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:39:32,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:39:32,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 14:39:32,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:39:32,093 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 14:39:32,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 320 transitions, 664 flow [2022-12-13 14:39:32,236 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2022-12-13 14:39:32,236 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 14:39:32,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 317 events. 25/317 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 396 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 268. Up to 4 conditions per place. [2022-12-13 14:39:32,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 320 transitions, 664 flow [2022-12-13 14:39:32,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 296 transitions, 607 flow [2022-12-13 14:39:32,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:39:32,266 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 296 transitions, 607 flow [2022-12-13 14:39:32,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 296 transitions, 607 flow [2022-12-13 14:39:32,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 296 transitions, 607 flow [2022-12-13 14:39:32,335 INFO L130 PetriNetUnfolder]: 24/296 cut-off events. [2022-12-13 14:39:32,335 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:39:32,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 296 events. 24/296 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 397 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 268. Up to 4 conditions per place. [2022-12-13 14:39:32,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 6258 [2022-12-13 14:39:42,364 INFO L134 LiptonReduction]: Checked pairs total: 18554 [2022-12-13 14:39:42,364 INFO L136 LiptonReduction]: Total number of compositions: 314 [2022-12-13 14:39:42,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:39:42,379 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;@2afe7d37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:39:42,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-12-13 14:39:42,381 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 14:39:42,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:39:42,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:39:42,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 14:39:42,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:39:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash 47621, now seen corresponding path program 1 times [2022-12-13 14:39:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812721989] [2022-12-13 14:39:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812721989] [2022-12-13 14:39:42,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812721989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:42,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:42,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:39:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292612601] [2022-12-13 14:39:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:39:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:39:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:39:42,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 634 [2022-12-13 14:39:42,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:42,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:39:42,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 634 [2022-12-13 14:39:42,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:39:44,963 INFO L130 PetriNetUnfolder]: 16911/23581 cut-off events. [2022-12-13 14:39:44,963 INFO L131 PetriNetUnfolder]: For 866/866 co-relation queries the response was YES. [2022-12-13 14:39:44,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48007 conditions, 23581 events. 16911/23581 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 135796 event pairs, 14314 based on Foata normal form. 0/9865 useless extension candidates. Maximal degree in co-relation 22588. Up to 11795 conditions per place. [2022-12-13 14:39:45,054 INFO L137 encePairwiseOnDemand]: 614/634 looper letters, 105 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2022-12-13 14:39:45,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 111 transitions, 474 flow [2022-12-13 14:39:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:39:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:39:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2022-12-13 14:39:45,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4768664563617245 [2022-12-13 14:39:45,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2022-12-13 14:39:45,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2022-12-13 14:39:45,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:39:45,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2022-12-13 14:39:45,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:45,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:45,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:45,088 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 149 flow. Second operand 3 states and 907 transitions. [2022-12-13 14:39:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 111 transitions, 474 flow [2022-12-13 14:39:45,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 14:39:45,105 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 180 flow [2022-12-13 14:39:45,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2022-12-13 14:39:45,109 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2022-12-13 14:39:45,109 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 180 flow [2022-12-13 14:39:45,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:45,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:39:45,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:39:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:39:45,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:39:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1477744, now seen corresponding path program 1 times [2022-12-13 14:39:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:45,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986288769] [2022-12-13 14:39:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:45,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:45,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986288769] [2022-12-13 14:39:45,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986288769] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401132569] [2022-12-13 14:39:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:45,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:39:45,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:39:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:45,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:39:45,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:45,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:39:45,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401132569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:45,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:39:45,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 14:39:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61804536] [2022-12-13 14:39:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:45,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:39:45,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:39:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:39:45,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 634 [2022-12-13 14:39:45,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:45,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:39:45,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 634 [2022-12-13 14:39:45,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:39:47,370 INFO L130 PetriNetUnfolder]: 16911/23578 cut-off events. [2022-12-13 14:39:47,370 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-12-13 14:39:47,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47770 conditions, 23578 events. 16911/23578 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 136872 event pairs, 14314 based on Foata normal form. 0/9871 useless extension candidates. Maximal degree in co-relation 23865. Up to 11791 conditions per place. [2022-12-13 14:39:47,435 INFO L137 encePairwiseOnDemand]: 625/634 looper letters, 102 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2022-12-13 14:39:47,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 484 flow [2022-12-13 14:39:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:39:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:39:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2022-12-13 14:39:47,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4507097791798107 [2022-12-13 14:39:47,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2022-12-13 14:39:47,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2022-12-13 14:39:47,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:39:47,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2022-12-13 14:39:47,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:47,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:47,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:47,458 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 180 flow. Second operand 4 states and 1143 transitions. [2022-12-13 14:39:47,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 484 flow [2022-12-13 14:39:47,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:39:47,462 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 168 flow [2022-12-13 14:39:47,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2022-12-13 14:39:47,463 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2022-12-13 14:39:47,463 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 168 flow [2022-12-13 14:39:47,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:47,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:39:47,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:39:47,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:39:47,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:47,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:39:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1477745, now seen corresponding path program 1 times [2022-12-13 14:39:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:47,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520136987] [2022-12-13 14:39:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:47,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:47,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520136987] [2022-12-13 14:39:47,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520136987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:47,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552474179] [2022-12-13 14:39:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:47,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:39:47,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:39:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:47,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:39:47,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:47,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:47,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552474179] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:39:47,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:39:47,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 14:39:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333425291] [2022-12-13 14:39:47,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:39:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:39:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:39:47,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 634 [2022-12-13 14:39:47,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 259.14285714285717) internal successors, (1814), 7 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:47,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:39:47,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 634 [2022-12-13 14:39:47,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:39:52,504 INFO L130 PetriNetUnfolder]: 42276/58939 cut-off events. [2022-12-13 14:39:52,504 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-12-13 14:39:52,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119398 conditions, 58939 events. 42276/58939 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2875. Compared 379390 event pairs, 35785 based on Foata normal form. 0/24676 useless extension candidates. Maximal degree in co-relation 95451. Up to 11793 conditions per place. [2022-12-13 14:39:52,741 INFO L137 encePairwiseOnDemand]: 625/634 looper letters, 243 selfloop transitions, 21 changer transitions 0/264 dead transitions. [2022-12-13 14:39:52,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 264 transitions, 1168 flow [2022-12-13 14:39:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:39:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:39:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1821 transitions. [2022-12-13 14:39:52,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47870662460567825 [2022-12-13 14:39:52,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1821 transitions. [2022-12-13 14:39:52,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1821 transitions. [2022-12-13 14:39:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:39:52,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1821 transitions. [2022-12-13 14:39:52,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.5) internal successors, (1821), 6 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:52,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:52,774 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:52,774 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 168 flow. Second operand 6 states and 1821 transitions. [2022-12-13 14:39:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 264 transitions, 1168 flow [2022-12-13 14:39:52,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 264 transitions, 1155 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:39:52,778 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 317 flow [2022-12-13 14:39:52,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2022-12-13 14:39:52,779 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2022-12-13 14:39:52,779 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 317 flow [2022-12-13 14:39:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.14285714285717) internal successors, (1814), 7 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:52,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:39:52,781 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 14:39:52,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:39:52,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 14:39:52,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:39:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1075281094, now seen corresponding path program 2 times [2022-12-13 14:39:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:52,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848796743] [2022-12-13 14:39:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848796743] [2022-12-13 14:39:53,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848796743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526943645] [2022-12-13 14:39:53,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:39:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:53,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:39:53,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:39:53,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:39:53,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:39:53,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:39:53,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:39:53,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:39:53,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526943645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:53,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:39:53,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 14:39:53,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319323954] [2022-12-13 14:39:53,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:53,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:39:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:39:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:39:53,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 634 [2022-12-13 14:39:53,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:53,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:39:53,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 634 [2022-12-13 14:39:53,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:39:57,798 INFO L130 PetriNetUnfolder]: 42276/58938 cut-off events. [2022-12-13 14:39:57,799 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2022-12-13 14:39:57,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119434 conditions, 58938 events. 42276/58938 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2875. Compared 379528 event pairs, 35785 based on Foata normal form. 1/24679 useless extension candidates. Maximal degree in co-relation 95461. Up to 58933 conditions per place. [2022-12-13 14:39:57,998 INFO L137 encePairwiseOnDemand]: 631/634 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2022-12-13 14:39:57,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 457 flow [2022-12-13 14:39:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:39:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:39:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-12-13 14:39:58,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4411146161934805 [2022-12-13 14:39:58,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-12-13 14:39:58,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-12-13 14:39:58,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:39:58,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-12-13 14:39:58,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:58,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:58,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:58,004 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 317 flow. Second operand 3 states and 839 transitions. [2022-12-13 14:39:58,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 457 flow [2022-12-13 14:39:58,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 427 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 14:39:58,006 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 289 flow [2022-12-13 14:39:58,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2022-12-13 14:39:58,007 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2022-12-13 14:39:58,007 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 289 flow [2022-12-13 14:39:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:58,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:39:58,008 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 14:39:58,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:39:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:58,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:39:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -343694892, now seen corresponding path program 1 times [2022-12-13 14:39:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:58,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374125190] [2022-12-13 14:39:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:58,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374125190] [2022-12-13 14:39:58,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374125190] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:58,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400398637] [2022-12-13 14:39:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:39:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:58,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:39:58,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:39:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:58,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:39:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:39:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:58,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:39:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:58,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400398637] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:39:58,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:39:58,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 14:39:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573300467] [2022-12-13 14:39:58,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:58,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:39:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:39:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:39:58,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 634 [2022-12-13 14:39:58,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 289 flow. Second operand has 13 states, 13 states have (on average 259.15384615384613) internal successors, (3369), 13 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:39:58,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:39:58,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 634 [2022-12-13 14:39:58,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:40:09,189 INFO L130 PetriNetUnfolder]: 93006/129660 cut-off events. [2022-12-13 14:40:09,189 INFO L131 PetriNetUnfolder]: For 1050/1050 co-relation queries the response was YES. [2022-12-13 14:40:09,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262691 conditions, 129660 events. 93006/129660 cut-off events. For 1050/1050 co-relation queries the response was YES. Maximal size of possible extension queue 3969. Compared 881776 event pairs, 78727 based on Foata normal form. 12/54300 useless extension candidates. Maximal degree in co-relation 262587. Up to 15400 conditions per place. [2022-12-13 14:40:09,638 INFO L137 encePairwiseOnDemand]: 626/634 looper letters, 524 selfloop transitions, 51 changer transitions 0/575 dead transitions. [2022-12-13 14:40:09,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 575 transitions, 2631 flow [2022-12-13 14:40:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:40:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 14:40:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3683 transitions. [2022-12-13 14:40:09,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4840956887486856 [2022-12-13 14:40:09,644 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3683 transitions. [2022-12-13 14:40:09,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3683 transitions. [2022-12-13 14:40:09,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:40:09,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3683 transitions. [2022-12-13 14:40:09,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 306.9166666666667) internal successors, (3683), 12 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:09,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 634.0) internal successors, (8242), 13 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:09,657 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 634.0) internal successors, (8242), 13 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:09,657 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 289 flow. Second operand 12 states and 3683 transitions. [2022-12-13 14:40:09,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 575 transitions, 2631 flow [2022-12-13 14:40:09,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 575 transitions, 2607 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:40:09,662 INFO L231 Difference]: Finished difference. Result has 79 places, 105 transitions, 637 flow [2022-12-13 14:40:09,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=637, PETRI_PLACES=79, PETRI_TRANSITIONS=105} [2022-12-13 14:40:09,662 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2022-12-13 14:40:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 105 transitions, 637 flow [2022-12-13 14:40:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 259.15384615384613) internal successors, (3369), 13 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:09,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:40:09,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:09,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:40:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:09,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:40:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -318148660, now seen corresponding path program 1 times [2022-12-13 14:40:09,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:09,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319071310] [2022-12-13 14:40:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319071310] [2022-12-13 14:40:09,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319071310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:09,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:09,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:40:09,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519160456] [2022-12-13 14:40:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:09,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:09,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:09,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:40:10,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 634 [2022-12-13 14:40:10,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 105 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:10,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:40:10,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 634 [2022-12-13 14:40:10,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:40:20,610 INFO L130 PetriNetUnfolder]: 94458/132159 cut-off events. [2022-12-13 14:40:20,610 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2022-12-13 14:40:20,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268030 conditions, 132159 events. 94458/132159 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 4022. Compared 903891 event pairs, 80080 based on Foata normal form. 990/57161 useless extension candidates. Maximal degree in co-relation 238658. Up to 129659 conditions per place. [2022-12-13 14:40:21,218 INFO L137 encePairwiseOnDemand]: 623/634 looper letters, 161 selfloop transitions, 15 changer transitions 2/178 dead transitions. [2022-12-13 14:40:21,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 178 transitions, 1414 flow [2022-12-13 14:40:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:21,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:40:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2022-12-13 14:40:21,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4347003154574132 [2022-12-13 14:40:21,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2022-12-13 14:40:21,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2022-12-13 14:40:21,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:40:21,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2022-12-13 14:40:21,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:21,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:21,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:21,228 INFO L175 Difference]: Start difference. First operand has 79 places, 105 transitions, 637 flow. Second operand 5 states and 1378 transitions. [2022-12-13 14:40:21,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 178 transitions, 1414 flow [2022-12-13 14:40:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 178 transitions, 1182 flow, removed 65 selfloop flow, removed 5 redundant places. [2022-12-13 14:40:21,233 INFO L231 Difference]: Finished difference. Result has 80 places, 117 transitions, 675 flow [2022-12-13 14:40:21,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=80, PETRI_TRANSITIONS=117} [2022-12-13 14:40:21,234 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-12-13 14:40:21,234 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 117 transitions, 675 flow [2022-12-13 14:40:21,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:21,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:40:21,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:40:21,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:40:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1034065855, now seen corresponding path program 1 times [2022-12-13 14:40:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:21,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950370495] [2022-12-13 14:40:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950370495] [2022-12-13 14:40:21,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950370495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415321656] [2022-12-13 14:40:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:21,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:21,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:21,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:21,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:40:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:40:21,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:40:21,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:21,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415321656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:21,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:21,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 14:40:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789709333] [2022-12-13 14:40:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:21,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:40:21,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2022-12-13 14:40:21,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 117 transitions, 675 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:21,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:40:21,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2022-12-13 14:40:21,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:40:30,859 INFO L130 PetriNetUnfolder]: 79850/111743 cut-off events. [2022-12-13 14:40:30,859 INFO L131 PetriNetUnfolder]: For 17487/17487 co-relation queries the response was YES. [2022-12-13 14:40:31,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242138 conditions, 111743 events. 79850/111743 cut-off events. For 17487/17487 co-relation queries the response was YES. Maximal size of possible extension queue 3426. Compared 749126 event pairs, 66968 based on Foata normal form. 0/49373 useless extension candidates. Maximal degree in co-relation 236879. Up to 111743 conditions per place. [2022-12-13 14:40:31,368 INFO L137 encePairwiseOnDemand]: 631/634 looper letters, 114 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2022-12-13 14:40:31,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 893 flow [2022-12-13 14:40:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:40:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:40:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2022-12-13 14:40:31,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4468980021030494 [2022-12-13 14:40:31,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2022-12-13 14:40:31,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2022-12-13 14:40:31,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:40:31,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2022-12-13 14:40:31,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:31,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:31,375 INFO L175 Difference]: Start difference. First operand has 80 places, 117 transitions, 675 flow. Second operand 3 states and 850 transitions. [2022-12-13 14:40:31,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 893 flow [2022-12-13 14:40:31,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 887 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 14:40:31,384 INFO L231 Difference]: Finished difference. Result has 79 places, 115 transitions, 659 flow [2022-12-13 14:40:31,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=659, PETRI_PLACES=79, PETRI_TRANSITIONS=115} [2022-12-13 14:40:31,385 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2022-12-13 14:40:31,385 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 115 transitions, 659 flow [2022-12-13 14:40:31,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:31,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:40:31,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:31,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:40:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 14:40:31,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:40:31,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1991267040, now seen corresponding path program 1 times [2022-12-13 14:40:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:31,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897375158] [2022-12-13 14:40:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:31,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:31,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897375158] [2022-12-13 14:40:31,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897375158] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:31,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528468609] [2022-12-13 14:40:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:31,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:31,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:31,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:31,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:40:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:40:31,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:40:31,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:31,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528468609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:31,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:31,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 14:40:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678030946] [2022-12-13 14:40:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:40:31,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 634 [2022-12-13 14:40:31,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 115 transitions, 659 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:31,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:40:31,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 634 [2022-12-13 14:40:31,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:40:40,199 INFO L130 PetriNetUnfolder]: 76682/106375 cut-off events. [2022-12-13 14:40:40,200 INFO L131 PetriNetUnfolder]: For 18392/18392 co-relation queries the response was YES. [2022-12-13 14:40:40,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239507 conditions, 106375 events. 76682/106375 cut-off events. For 18392/18392 co-relation queries the response was YES. Maximal size of possible extension queue 3184. Compared 726506 event pairs, 27544 based on Foata normal form. 0/49043 useless extension candidates. Maximal degree in co-relation 239486. Up to 57469 conditions per place. [2022-12-13 14:40:40,698 INFO L137 encePairwiseOnDemand]: 625/634 looper letters, 132 selfloop transitions, 7 changer transitions 0/139 dead transitions. [2022-12-13 14:40:40,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 139 transitions, 1000 flow [2022-12-13 14:40:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:40:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1131 transitions. [2022-12-13 14:40:40,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44597791798107256 [2022-12-13 14:40:40,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1131 transitions. [2022-12-13 14:40:40,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1131 transitions. [2022-12-13 14:40:40,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:40:40,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1131 transitions. [2022-12-13 14:40:40,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:40,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:40,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:40,706 INFO L175 Difference]: Start difference. First operand has 79 places, 115 transitions, 659 flow. Second operand 4 states and 1131 transitions. [2022-12-13 14:40:40,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 139 transitions, 1000 flow [2022-12-13 14:40:40,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 139 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:40:40,717 INFO L231 Difference]: Finished difference. Result has 81 places, 115 transitions, 697 flow [2022-12-13 14:40:40,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=697, PETRI_PLACES=81, PETRI_TRANSITIONS=115} [2022-12-13 14:40:40,718 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2022-12-13 14:40:40,718 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 115 transitions, 697 flow [2022-12-13 14:40:40,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:40,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:40:40,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:40,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:40:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 14:40:40,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:40:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1599739481, now seen corresponding path program 1 times [2022-12-13 14:40:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:40,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383784205] [2022-12-13 14:40:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:40:41,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:41,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383784205] [2022-12-13 14:40:41,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383784205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:41,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:41,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:40:41,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269305394] [2022-12-13 14:40:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:40:41,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 634 [2022-12-13 14:40:41,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 115 transitions, 697 flow. Second operand has 4 states, 4 states have (on average 263.5) internal successors, (1054), 4 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:40:41,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:40:41,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 634 [2022-12-13 14:40:41,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:41:00,084 INFO L130 PetriNetUnfolder]: 167707/229674 cut-off events. [2022-12-13 14:41:00,084 INFO L131 PetriNetUnfolder]: For 174108/174108 co-relation queries the response was YES. [2022-12-13 14:41:00,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589937 conditions, 229674 events. 167707/229674 cut-off events. For 174108/174108 co-relation queries the response was YES. Maximal size of possible extension queue 6475. Compared 1618994 event pairs, 21351 based on Foata normal form. 3388/117078 useless extension candidates. Maximal degree in co-relation 589913. Up to 95085 conditions per place. [2022-12-13 14:41:01,247 INFO L137 encePairwiseOnDemand]: 624/634 looper letters, 200 selfloop transitions, 12 changer transitions 0/212 dead transitions. [2022-12-13 14:41:01,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 212 transitions, 1430 flow [2022-12-13 14:41:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:41:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:41:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2022-12-13 14:41:01,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45962145110410096 [2022-12-13 14:41:01,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2022-12-13 14:41:01,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2022-12-13 14:41:01,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:41:01,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2022-12-13 14:41:01,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:01,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:01,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:01,256 INFO L175 Difference]: Start difference. First operand has 81 places, 115 transitions, 697 flow. Second operand 5 states and 1457 transitions. [2022-12-13 14:41:01,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 212 transitions, 1430 flow [2022-12-13 14:41:01,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 212 transitions, 1429 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:41:01,298 INFO L231 Difference]: Finished difference. Result has 87 places, 126 transitions, 819 flow [2022-12-13 14:41:01,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=87, PETRI_TRANSITIONS=126} [2022-12-13 14:41:01,299 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2022-12-13 14:41:01,299 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 126 transitions, 819 flow [2022-12-13 14:41:01,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.5) internal successors, (1054), 4 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:01,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:41:01,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:41:01,300 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:41:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1599737741, now seen corresponding path program 1 times [2022-12-13 14:41:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:01,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430879626] [2022-12-13 14:41:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:41:01,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430879626] [2022-12-13 14:41:01,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430879626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:01,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:41:01,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:41:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950464072] [2022-12-13 14:41:01,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:01,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:41:01,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:41:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:41:01,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 634 [2022-12-13 14:41:01,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 126 transitions, 819 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:01,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:41:01,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 634 [2022-12-13 14:41:01,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:41:35,498 INFO L130 PetriNetUnfolder]: 272306/372751 cut-off events. [2022-12-13 14:41:35,498 INFO L131 PetriNetUnfolder]: For 379434/379434 co-relation queries the response was YES. [2022-12-13 14:41:36,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097008 conditions, 372751 events. 272306/372751 cut-off events. For 379434/379434 co-relation queries the response was YES. Maximal size of possible extension queue 9937. Compared 2751933 event pairs, 117997 based on Foata normal form. 0/184915 useless extension candidates. Maximal degree in co-relation 1096980. Up to 211767 conditions per place. [2022-12-13 14:41:37,614 INFO L137 encePairwiseOnDemand]: 630/634 looper letters, 173 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-12-13 14:41:37,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 175 transitions, 1383 flow [2022-12-13 14:41:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:41:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:41:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2022-12-13 14:41:37,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46740273396424814 [2022-12-13 14:41:37,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2022-12-13 14:41:37,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2022-12-13 14:41:37,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:41:37,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2022-12-13 14:41:37,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:37,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:37,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:37,620 INFO L175 Difference]: Start difference. First operand has 87 places, 126 transitions, 819 flow. Second operand 3 states and 889 transitions. [2022-12-13 14:41:37,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 175 transitions, 1383 flow [2022-12-13 14:41:37,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 175 transitions, 1371 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:41:37,792 INFO L231 Difference]: Finished difference. Result has 89 places, 127 transitions, 830 flow [2022-12-13 14:41:37,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=830, PETRI_PLACES=89, PETRI_TRANSITIONS=127} [2022-12-13 14:41:37,792 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2022-12-13 14:41:37,792 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 127 transitions, 830 flow [2022-12-13 14:41:37,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:37,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:41:37,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:41:37,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:41:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2013840204, now seen corresponding path program 1 times [2022-12-13 14:41:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:37,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86635848] [2022-12-13 14:41:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:41:37,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:37,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86635848] [2022-12-13 14:41:37,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86635848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:37,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:41:37,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:41:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010596168] [2022-12-13 14:41:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:41:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:41:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:41:37,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 634 [2022-12-13 14:41:37,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 127 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:41:37,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:41:37,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 634 [2022-12-13 14:41:37,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:42:13,357 INFO L130 PetriNetUnfolder]: 279368/384083 cut-off events. [2022-12-13 14:42:13,357 INFO L131 PetriNetUnfolder]: For 510351/510351 co-relation queries the response was YES. [2022-12-13 14:42:14,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155294 conditions, 384083 events. 279368/384083 cut-off events. For 510351/510351 co-relation queries the response was YES. Maximal size of possible extension queue 10154. Compared 2828174 event pairs, 209044 based on Foata normal form. 2530/197457 useless extension candidates. Maximal degree in co-relation 1155265. Up to 372739 conditions per place. [2022-12-13 14:42:15,645 INFO L137 encePairwiseOnDemand]: 619/634 looper letters, 146 selfloop transitions, 14 changer transitions 5/165 dead transitions. [2022-12-13 14:42:15,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 165 transitions, 1398 flow [2022-12-13 14:42:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:42:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:42:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1100 transitions. [2022-12-13 14:42:15,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43375394321766564 [2022-12-13 14:42:15,648 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1100 transitions. [2022-12-13 14:42:15,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1100 transitions. [2022-12-13 14:42:15,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:42:15,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1100 transitions. [2022-12-13 14:42:15,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:15,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:15,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:15,653 INFO L175 Difference]: Start difference. First operand has 89 places, 127 transitions, 830 flow. Second operand 4 states and 1100 transitions. [2022-12-13 14:42:15,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 165 transitions, 1398 flow [2022-12-13 14:42:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 165 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:42:16,042 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 881 flow [2022-12-13 14:42:16,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=881, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2022-12-13 14:42:16,043 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2022-12-13 14:42:16,043 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 881 flow [2022-12-13 14:42:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:16,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:42:16,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:42:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:42:16,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:42:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 875790604, now seen corresponding path program 1 times [2022-12-13 14:42:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507554012] [2022-12-13 14:42:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:42:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507554012] [2022-12-13 14:42:16,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507554012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:16,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:42:16,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:42:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208450321] [2022-12-13 14:42:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:42:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:42:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:42:16,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 634 [2022-12-13 14:42:16,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 881 flow. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:16,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:42:16,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 634 [2022-12-13 14:42:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:42:42,714 INFO L130 PetriNetUnfolder]: 196901/275810 cut-off events. [2022-12-13 14:42:42,715 INFO L131 PetriNetUnfolder]: For 326518/326518 co-relation queries the response was YES. [2022-12-13 14:42:43,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913046 conditions, 275810 events. 196901/275810 cut-off events. For 326518/326518 co-relation queries the response was YES. Maximal size of possible extension queue 7626. Compared 2061820 event pairs, 65956 based on Foata normal form. 4026/145240 useless extension candidates. Maximal degree in co-relation 913016. Up to 245642 conditions per place. [2022-12-13 14:42:44,331 INFO L137 encePairwiseOnDemand]: 630/634 looper letters, 159 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2022-12-13 14:42:44,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 163 transitions, 1390 flow [2022-12-13 14:42:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:42:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:42:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2022-12-13 14:42:44,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4526813880126183 [2022-12-13 14:42:44,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2022-12-13 14:42:44,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2022-12-13 14:42:44,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:42:44,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2022-12-13 14:42:44,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:44,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:44,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:44,337 INFO L175 Difference]: Start difference. First operand has 92 places, 127 transitions, 881 flow. Second operand 3 states and 861 transitions. [2022-12-13 14:42:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 163 transitions, 1390 flow [2022-12-13 14:42:44,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 163 transitions, 1371 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 14:42:44,521 INFO L231 Difference]: Finished difference. Result has 94 places, 129 transitions, 898 flow [2022-12-13 14:42:44,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=898, PETRI_PLACES=94, PETRI_TRANSITIONS=129} [2022-12-13 14:42:44,522 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2022-12-13 14:42:44,522 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 129 transitions, 898 flow [2022-12-13 14:42:44,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:44,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:42:44,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:42:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:42:44,522 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:42:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -763487929, now seen corresponding path program 1 times [2022-12-13 14:42:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538976199] [2022-12-13 14:42:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:42:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538976199] [2022-12-13 14:42:44,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538976199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:44,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:42:44,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:42:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912529319] [2022-12-13 14:42:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:44,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:42:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:42:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:42:44,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 634 [2022-12-13 14:42:44,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 129 transitions, 898 flow. Second operand has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:42:44,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:42:44,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 634 [2022-12-13 14:42:44,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:43:09,583 INFO L130 PetriNetUnfolder]: 182286/255717 cut-off events. [2022-12-13 14:43:09,583 INFO L131 PetriNetUnfolder]: For 394138/394138 co-relation queries the response was YES. [2022-12-13 14:43:10,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870048 conditions, 255717 events. 182286/255717 cut-off events. For 394138/394138 co-relation queries the response was YES. Maximal size of possible extension queue 7392. Compared 1910891 event pairs, 134656 based on Foata normal form. 272/132093 useless extension candidates. Maximal degree in co-relation 870016. Up to 250726 conditions per place. [2022-12-13 14:43:11,132 INFO L137 encePairwiseOnDemand]: 624/634 looper letters, 143 selfloop transitions, 24 changer transitions 0/167 dead transitions. [2022-12-13 14:43:11,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 167 transitions, 1441 flow [2022-12-13 14:43:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:43:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:43:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1103 transitions. [2022-12-13 14:43:11,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4349369085173502 [2022-12-13 14:43:11,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1103 transitions. [2022-12-13 14:43:11,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1103 transitions. [2022-12-13 14:43:11,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:43:11,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1103 transitions. [2022-12-13 14:43:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:11,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:11,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:11,140 INFO L175 Difference]: Start difference. First operand has 94 places, 129 transitions, 898 flow. Second operand 4 states and 1103 transitions. [2022-12-13 14:43:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 167 transitions, 1441 flow [2022-12-13 14:43:11,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 1434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:43:11,298 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 997 flow [2022-12-13 14:43:11,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=997, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2022-12-13 14:43:11,299 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2022-12-13 14:43:11,299 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 997 flow [2022-12-13 14:43:11,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:11,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:43:11,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:43:11,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 14:43:11,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:43:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:43:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash -763487996, now seen corresponding path program 1 times [2022-12-13 14:43:11,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:43:11,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734007384] [2022-12-13 14:43:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:11,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:43:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:43:11,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734007384] [2022-12-13 14:43:11,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734007384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:43:11,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:43:11,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:43:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252226533] [2022-12-13 14:43:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:43:11,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:43:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:43:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:43:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:43:11,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 634 [2022-12-13 14:43:11,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 997 flow. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:11,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:43:11,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 634 [2022-12-13 14:43:11,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:43:33,813 INFO L130 PetriNetUnfolder]: 158934/223409 cut-off events. [2022-12-13 14:43:33,813 INFO L131 PetriNetUnfolder]: For 323423/323423 co-relation queries the response was YES. [2022-12-13 14:43:34,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790476 conditions, 223409 events. 158934/223409 cut-off events. For 323423/323423 co-relation queries the response was YES. Maximal size of possible extension queue 6266. Compared 1611730 event pairs, 48436 based on Foata normal form. 3948/120759 useless extension candidates. Maximal degree in co-relation 790442. Up to 196519 conditions per place. [2022-12-13 14:43:35,382 INFO L137 encePairwiseOnDemand]: 624/634 looper letters, 149 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2022-12-13 14:43:35,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 1432 flow [2022-12-13 14:43:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:43:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:43:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2022-12-13 14:43:35,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4526813880126183 [2022-12-13 14:43:35,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2022-12-13 14:43:35,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2022-12-13 14:43:35,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:43:35,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2022-12-13 14:43:35,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:35,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:35,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:35,388 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 997 flow. Second operand 3 states and 861 transitions. [2022-12-13 14:43:35,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 1432 flow [2022-12-13 14:43:36,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 154 transitions, 1369 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 14:43:36,161 INFO L231 Difference]: Finished difference. Result has 99 places, 134 transitions, 983 flow [2022-12-13 14:43:36,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=983, PETRI_PLACES=99, PETRI_TRANSITIONS=134} [2022-12-13 14:43:36,161 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 32 predicate places. [2022-12-13 14:43:36,161 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 134 transitions, 983 flow [2022-12-13 14:43:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:36,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:43:36,162 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:43:36,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 14:43:36,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:43:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:43:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash -828450830, now seen corresponding path program 1 times [2022-12-13 14:43:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:43:36,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708871894] [2022-12-13 14:43:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:43:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:43:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708871894] [2022-12-13 14:43:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708871894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:43:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189471392] [2022-12-13 14:43:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:36,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:43:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:43:36,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:43:36,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:43:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:36,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:43:36,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:43:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:36,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:43:36,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189471392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:43:36,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:43:36,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 14:43:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657291061] [2022-12-13 14:43:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:43:36,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:43:36,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:43:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:43:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:43:36,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 634 [2022-12-13 14:43:36,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 134 transitions, 983 flow. Second operand has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:36,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:43:36,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 634 [2022-12-13 14:43:36,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:43:57,388 INFO L130 PetriNetUnfolder]: 146594/206191 cut-off events. [2022-12-13 14:43:57,388 INFO L131 PetriNetUnfolder]: For 333359/333359 co-relation queries the response was YES. [2022-12-13 14:43:58,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785823 conditions, 206191 events. 146594/206191 cut-off events. For 333359/333359 co-relation queries the response was YES. Maximal size of possible extension queue 5787. Compared 1485950 event pairs, 57484 based on Foata normal form. 0/117783 useless extension candidates. Maximal degree in co-relation 785788. Up to 161958 conditions per place. [2022-12-13 14:43:58,729 INFO L137 encePairwiseOnDemand]: 631/634 looper letters, 177 selfloop transitions, 2 changer transitions 1/180 dead transitions. [2022-12-13 14:43:58,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1559 flow [2022-12-13 14:43:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:43:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:43:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1156 transitions. [2022-12-13 14:43:58,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4558359621451104 [2022-12-13 14:43:58,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1156 transitions. [2022-12-13 14:43:58,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1156 transitions. [2022-12-13 14:43:58,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:43:58,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1156 transitions. [2022-12-13 14:43:58,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:58,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:58,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:58,736 INFO L175 Difference]: Start difference. First operand has 99 places, 134 transitions, 983 flow. Second operand 4 states and 1156 transitions. [2022-12-13 14:43:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1559 flow [2022-12-13 14:43:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 180 transitions, 1550 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:43:59,248 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 974 flow [2022-12-13 14:43:59,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=974, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2022-12-13 14:43:59,249 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 33 predicate places. [2022-12-13 14:43:59,249 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 974 flow [2022-12-13 14:43:59,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:59,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:43:59,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:43:59,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:43:59,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 14:43:59,450 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:43:59,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:43:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash -828450829, now seen corresponding path program 1 times [2022-12-13 14:43:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:43:59,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099741356] [2022-12-13 14:43:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:59,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:43:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:43:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099741356] [2022-12-13 14:43:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099741356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:43:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844045825] [2022-12-13 14:43:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:59,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:43:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:43:59,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:43:59,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:43:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:43:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:43:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:59,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:43:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:43:59,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844045825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:43:59,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:43:59,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 14:43:59,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332047657] [2022-12-13 14:43:59,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:43:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:43:59,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:43:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:43:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:43:59,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 634 [2022-12-13 14:43:59,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 974 flow. Second operand has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:43:59,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:43:59,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 634 [2022-12-13 14:43:59,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:06,802 INFO L130 PetriNetUnfolder]: 459182/633007 cut-off events. [2022-12-13 14:45:06,802 INFO L131 PetriNetUnfolder]: For 1041577/1041577 co-relation queries the response was YES. [2022-12-13 14:45:09,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437275 conditions, 633007 events. 459182/633007 cut-off events. For 1041577/1041577 co-relation queries the response was YES. Maximal size of possible extension queue 12121. Compared 4866420 event pairs, 89300 based on Foata normal form. 0/363669 useless extension candidates. Maximal degree in co-relation 2437240. Up to 232129 conditions per place. [2022-12-13 14:45:11,284 INFO L137 encePairwiseOnDemand]: 631/634 looper letters, 317 selfloop transitions, 5 changer transitions 1/323 dead transitions. [2022-12-13 14:45:11,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 323 transitions, 2702 flow [2022-12-13 14:45:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:45:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:45:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1797 transitions. [2022-12-13 14:45:11,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.472397476340694 [2022-12-13 14:45:11,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1797 transitions. [2022-12-13 14:45:11,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1797 transitions. [2022-12-13 14:45:11,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:11,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1797 transitions. [2022-12-13 14:45:11,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.5) internal successors, (1797), 6 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:11,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:11,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 634.0) internal successors, (4438), 7 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:11,295 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 974 flow. Second operand 6 states and 1797 transitions. [2022-12-13 14:45:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 323 transitions, 2702 flow [2022-12-13 14:45:13,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 323 transitions, 2699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:45:13,358 INFO L231 Difference]: Finished difference. Result has 106 places, 136 transitions, 1019 flow [2022-12-13 14:45:13,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1019, PETRI_PLACES=106, PETRI_TRANSITIONS=136} [2022-12-13 14:45:13,359 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2022-12-13 14:45:13,359 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 136 transitions, 1019 flow [2022-12-13 14:45:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:13,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:13,359 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 14:45:13,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 14:45:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 14:45:13,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:45:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1575459436, now seen corresponding path program 2 times [2022-12-13 14:45:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:13,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101282925] [2022-12-13 14:45:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:45:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:13,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101282925] [2022-12-13 14:45:13,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101282925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:45:13,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313484186] [2022-12-13 14:45:13,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:45:13,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:45:13,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:45:13,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:45:13,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:45:13,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:45:13,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:45:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:45:13,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:45:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 14:45:13,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:45:13,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313484186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:13,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:45:13,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 14:45:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769221875] [2022-12-13 14:45:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:45:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:45:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:45:13,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 634 [2022-12-13 14:45:13,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 136 transitions, 1019 flow. Second operand has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:13,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:13,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 634 [2022-12-13 14:45:13,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:46:09,690 INFO L130 PetriNetUnfolder]: 363199/500724 cut-off events. [2022-12-13 14:46:09,690 INFO L131 PetriNetUnfolder]: For 1107615/1107615 co-relation queries the response was YES. [2022-12-13 14:46:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983188 conditions, 500724 events. 363199/500724 cut-off events. For 1107615/1107615 co-relation queries the response was YES. Maximal size of possible extension queue 9652. Compared 3734980 event pairs, 217457 based on Foata normal form. 2/306174 useless extension candidates. Maximal degree in co-relation 1983150. Up to 500679 conditions per place. [2022-12-13 14:46:13,475 INFO L137 encePairwiseOnDemand]: 629/634 looper letters, 111 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2022-12-13 14:46:13,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 133 transitions, 1253 flow [2022-12-13 14:46:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:46:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:46:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1086 transitions. [2022-12-13 14:46:13,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4282334384858044 [2022-12-13 14:46:13,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1086 transitions. [2022-12-13 14:46:13,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1086 transitions. [2022-12-13 14:46:13,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:46:13,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1086 transitions. [2022-12-13 14:46:13,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:46:13,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:46:13,482 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 634.0) internal successors, (3170), 5 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:46:13,483 INFO L175 Difference]: Start difference. First operand has 106 places, 136 transitions, 1019 flow. Second operand 4 states and 1086 transitions. [2022-12-13 14:46:13,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 133 transitions, 1253 flow [2022-12-13 14:46:15,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 133 transitions, 1245 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 14:46:15,713 INFO L231 Difference]: Finished difference. Result has 105 places, 133 transitions, 1023 flow [2022-12-13 14:46:15,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1023, PETRI_PLACES=105, PETRI_TRANSITIONS=133} [2022-12-13 14:46:15,713 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 38 predicate places. [2022-12-13 14:46:15,713 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 133 transitions, 1023 flow [2022-12-13 14:46:15,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:46:15,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:46:15,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:46:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 14:46:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:46:15,915 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:46:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:46:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash -666785899, now seen corresponding path program 1 times [2022-12-13 14:46:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:46:15,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281189418] [2022-12-13 14:46:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:46:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:46:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:46:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:46:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281189418] [2022-12-13 14:46:15,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281189418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:46:15,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:46:15,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:46:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97216226] [2022-12-13 14:46:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:46:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:46:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:46:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:46:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:46:15,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 634 [2022-12-13 14:46:15,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 133 transitions, 1023 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:46:15,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:46:15,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 634 [2022-12-13 14:46:15,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:47:16,880 INFO L130 PetriNetUnfolder]: 389848/543805 cut-off events. [2022-12-13 14:47:16,880 INFO L131 PetriNetUnfolder]: For 1193496/1193496 co-relation queries the response was YES. [2022-12-13 14:47:19,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145352 conditions, 543805 events. 389848/543805 cut-off events. For 1193496/1193496 co-relation queries the response was YES. Maximal size of possible extension queue 10946. Compared 4231696 event pairs, 224613 based on Foata normal form. 0/335035 useless extension candidates. Maximal degree in co-relation 2145312. Up to 454789 conditions per place. [2022-12-13 14:47:21,531 INFO L137 encePairwiseOnDemand]: 630/634 looper letters, 177 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2022-12-13 14:47:21,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 180 transitions, 1723 flow [2022-12-13 14:47:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:47:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:47:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2022-12-13 14:47:21,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46004206098843325 [2022-12-13 14:47:21,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2022-12-13 14:47:21,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2022-12-13 14:47:21,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:47:21,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2022-12-13 14:47:21,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:21,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:21,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 634.0) internal successors, (2536), 4 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:21,537 INFO L175 Difference]: Start difference. First operand has 105 places, 133 transitions, 1023 flow. Second operand 3 states and 875 transitions. [2022-12-13 14:47:21,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 180 transitions, 1723 flow [2022-12-13 14:47:23,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 180 transitions, 1700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:47:23,575 INFO L231 Difference]: Finished difference. Result has 105 places, 132 transitions, 1000 flow [2022-12-13 14:47:23,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1000, PETRI_PLACES=105, PETRI_TRANSITIONS=132} [2022-12-13 14:47:23,575 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 38 predicate places. [2022-12-13 14:47:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 132 transitions, 1000 flow [2022-12-13 14:47:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:23,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:47:23,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 14:47:23,576 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-12-13 14:47:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -666785717, now seen corresponding path program 1 times [2022-12-13 14:47:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:23,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049903540] [2022-12-13 14:47:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:47:23,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049903540] [2022-12-13 14:47:23,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049903540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804629634] [2022-12-13 14:47:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:23,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:23,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:23,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44723e7a-5ddc-473e-b7fb-121785281176/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:47:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 14:47:24,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:24,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:47:24,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:47:24,147 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-12-13 14:47:24,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-12-13 14:47:24,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 14:47:24,270 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:47:24,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 14:47:24,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 14:47:24,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:47:24,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 14:47:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:47:24,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 14:47:24,572 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 14:47:24,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 14:47:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:24,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:24,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:47:24,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-12-13 14:47:24,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:47:24,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 151 [2022-12-13 14:47:24,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2022-12-13 14:47:24,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 106 [2022-12-13 14:47:25,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 94 [2022-12-13 14:47:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:25,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804629634] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:25,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:25,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2022-12-13 14:47:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458584142] [2022-12-13 14:47:25,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:25,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 14:47:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 14:47:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=596, Unknown=23, NotChecked=0, Total=702 [2022-12-13 14:47:27,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 634 [2022-12-13 14:47:27,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 132 transitions, 1000 flow. Second operand has 27 states, 27 states have (on average 189.55555555555554) internal successors, (5118), 27 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:27,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:47:27,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 634 [2022-12-13 14:47:27,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:47:30,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]