./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- 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-38b53e6 [2022-11-25 18:15:28,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:15:28,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:15:28,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:15:28,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:15:28,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:15:28,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:15:28,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:15:28,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:15:28,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:15:28,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:15:28,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:15:28,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:15:28,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:15:28,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:15:28,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:15:28,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:15:28,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:15:28,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:15:28,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:15:28,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:15:28,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:15:28,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:15:28,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:15:28,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:15:28,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:15:28,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:15:28,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:15:28,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:15:28,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:15:28,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:15:28,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:15:28,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:15:28,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:15:28,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:15:28,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:15:28,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:15:28,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:15:28,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:15:28,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:15:28,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:15:28,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:15:28,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:15:28,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:15:28,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:15:28,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:15:28,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:15:28,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:15:28,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:15:28,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:15:28,968 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:15:28,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:15:28,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:15:28,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:15:28,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:15:28,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:15:28,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:15:28,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:15:28,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:15:28,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:15:28,971 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:15:28,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:15:28,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:15:28,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:15:28,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:15:28,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:15:28,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:15:28,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:15:28,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:15:28,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:15:28,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:15:28,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:15:28,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:15:28,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:15:28,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:15:28,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:15:28,975 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:15:28,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:15:28,976 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_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-25 18:15:29,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:15:29,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:15:29,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:15:29,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:15:29,286 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:15:29,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-25 18:15:32,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:15:32,705 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:15:32,706 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-25 18:15:32,724 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/data/2765010d9/d77e2421deb5456b86c4b275cfc8fa8b/FLAGffb706da0 [2022-11-25 18:15:32,745 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/data/2765010d9/d77e2421deb5456b86c4b275cfc8fa8b [2022-11-25 18:15:32,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:15:32,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:15:32,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:15:32,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:15:32,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:15:32,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:15:32" (1/1) ... [2022-11-25 18:15:32,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e585d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:32, skipping insertion in model container [2022-11-25 18:15:32,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:15:32" (1/1) ... [2022-11-25 18:15:32,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:15:32,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:15:33,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,200 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_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-25 18:15:33,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:15:33,213 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:15:33,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:15:33,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:15:33,272 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_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-25 18:15:33,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:15:33,319 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:15:33,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33 WrapperNode [2022-11-25 18:15:33,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:15:33,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:15:33,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:15:33,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:15:33,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,392 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-25 18:15:33,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:15:33,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:15:33,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:15:33,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:15:33,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:15:33,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:15:33,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:15:33,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:15:33,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (1/1) ... [2022-11-25 18:15:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:15:33,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:33,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:15:33,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:15:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 18:15:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 18:15:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 18:15:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 18:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:15:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:15:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:15:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:15:33,566 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:15:33,706 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:15:33,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:15:33,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:15:33,965 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:15:33,965 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:15:33,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:15:33 BoogieIcfgContainer [2022-11-25 18:15:33,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:15:33,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:15:33,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:15:33,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:15:33,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:15:32" (1/3) ... [2022-11-25 18:15:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10887fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:15:33, skipping insertion in model container [2022-11-25 18:15:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:15:33" (2/3) ... [2022-11-25 18:15:33,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10887fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:15:33, skipping insertion in model container [2022-11-25 18:15:33,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:15:33" (3/3) ... [2022-11-25 18:15:33,977 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-25 18:15:33,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:15:33,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:15:33,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 18:15:33,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:15:34,083 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:15:34,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-11-25 18:15:34,210 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-25 18:15:34,210 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:15:34,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-25 18:15:34,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-11-25 18:15:34,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-11-25 18:15:34,229 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:15:34,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 164 flow [2022-11-25 18:15:34,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 164 flow [2022-11-25 18:15:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 164 flow [2022-11-25 18:15:34,337 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-25 18:15:34,337 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:15:34,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-25 18:15:34,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 1870 [2022-11-25 18:15:37,719 INFO L134 LiptonReduction]: Checked pairs total: 1954 [2022-11-25 18:15:37,719 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-11-25 18:15:37,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:15:37,743 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;@6c08b18a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:15:37,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-25 18:15:37,746 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-25 18:15:37,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:15:37,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:37,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:15:37,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash 10266222, now seen corresponding path program 1 times [2022-11-25 18:15:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:37,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723482627] [2022-11-25 18:15:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723482627] [2022-11-25 18:15:38,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723482627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:38,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:38,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:15:38,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445659161] [2022-11-25 18:15:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:38,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:38,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-11-25 18:15:38,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:38,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-11-25 18:15:38,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:38,312 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2022-11-25 18:15:38,312 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:15:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1860 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2022-11-25 18:15:38,319 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-11-25 18:15:38,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2022-11-25 18:15:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2022-11-25 18:15:38,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5180467091295117 [2022-11-25 18:15:38,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2022-11-25 18:15:38,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2022-11-25 18:15:38,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:38,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2022-11-25 18:15:38,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,349 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 244 transitions. [2022-11-25 18:15:38,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2022-11-25 18:15:38,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:15:38,354 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2022-11-25 18:15:38,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-11-25 18:15:38,359 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2022-11-25 18:15:38,360 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2022-11-25 18:15:38,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:38,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:15:38,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:15:38,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:38,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 10266221, now seen corresponding path program 1 times [2022-11-25 18:15:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:38,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361866450] [2022-11-25 18:15:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:38,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:38,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361866450] [2022-11-25 18:15:38,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361866450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:38,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:38,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:15:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565981745] [2022-11-25 18:15:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:38,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-11-25 18:15:38,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:38,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-11-25 18:15:38,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:38,527 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2022-11-25 18:15:38,528 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-25 18:15:38,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1900 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2022-11-25 18:15:38,551 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2022-11-25 18:15:38,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2022-11-25 18:15:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-25 18:15:38,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-11-25 18:15:38,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:38,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,558 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 237 transitions. [2022-11-25 18:15:38,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2022-11-25 18:15:38,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:15:38,561 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2022-11-25 18:15:38,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2022-11-25 18:15:38,562 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2022-11-25 18:15:38,562 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2022-11-25 18:15:38,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:38,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:15:38,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:15:38,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 10266249, now seen corresponding path program 1 times [2022-11-25 18:15:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:38,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100629846] [2022-11-25 18:15:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:38,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100629846] [2022-11-25 18:15:38,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100629846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:38,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:38,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689561388] [2022-11-25 18:15:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:38,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:38,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-11-25 18:15:38,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:38,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-11-25 18:15:38,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:38,808 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2022-11-25 18:15:38,808 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2022-11-25 18:15:38,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3173 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2022-11-25 18:15:38,816 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-11-25 18:15:38,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2022-11-25 18:15:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-25 18:15:38,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-11-25 18:15:38,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:38,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-25 18:15:38,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,825 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 237 transitions. [2022-11-25 18:15:38,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2022-11-25 18:15:38,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:38,829 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2022-11-25 18:15:38,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2022-11-25 18:15:38,831 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2022-11-25 18:15:38,831 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2022-11-25 18:15:38,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:38,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:15:38,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:15:38,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:38,834 INFO L85 PathProgramCache]: Analyzing trace with hash 318254411, now seen corresponding path program 1 times [2022-11-25 18:15:38,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:38,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635180919] [2022-11-25 18:15:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:38,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635180919] [2022-11-25 18:15:38,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635180919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:38,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:38,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571144945] [2022-11-25 18:15:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:38,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-11-25 18:15:38,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:38,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:38,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-11-25 18:15:38,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,046 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2022-11-25 18:15:39,046 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-11-25 18:15:39,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2859 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 553 conditions per place. [2022-11-25 18:15:39,051 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 18:15:39,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 36 transitions, 218 flow [2022-11-25 18:15:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-11-25 18:15:39,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49256900212314225 [2022-11-25 18:15:39,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-11-25 18:15:39,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-11-25 18:15:39,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-11-25 18:15:39,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,056 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 3 states and 232 transitions. [2022-11-25 18:15:39,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 36 transitions, 218 flow [2022-11-25 18:15:39,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:39,058 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 104 flow [2022-11-25 18:15:39,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2022-11-25 18:15:39,059 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2022-11-25 18:15:39,060 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 104 flow [2022-11-25 18:15:39,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:15:39,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1277460996, now seen corresponding path program 1 times [2022-11-25 18:15:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974920595] [2022-11-25 18:15:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:39,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974920595] [2022-11-25 18:15:39,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974920595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:39,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:39,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643751662] [2022-11-25 18:15:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:39,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-11-25 18:15:39,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:39,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-11-25 18:15:39,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,229 INFO L130 PetriNetUnfolder]: 329/566 cut-off events. [2022-11-25 18:15:39,230 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-11-25 18:15:39,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 566 events. 329/566 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2497 event pairs, 213 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 1539. Up to 471 conditions per place. [2022-11-25 18:15:39,234 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-11-25 18:15:39,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 186 flow [2022-11-25 18:15:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2022-11-25 18:15:39,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49044585987261147 [2022-11-25 18:15:39,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2022-11-25 18:15:39,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2022-11-25 18:15:39,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2022-11-25 18:15:39,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,239 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 104 flow. Second operand 3 states and 231 transitions. [2022-11-25 18:15:39,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 186 flow [2022-11-25 18:15:39,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:39,241 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 105 flow [2022-11-25 18:15:39,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2022-11-25 18:15:39,242 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-11-25 18:15:39,242 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 105 flow [2022-11-25 18:15:39,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:15:39,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1277460959, now seen corresponding path program 1 times [2022-11-25 18:15:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007056691] [2022-11-25 18:15:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007056691] [2022-11-25 18:15:39,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007056691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:39,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:39,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:15:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850032198] [2022-11-25 18:15:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:39,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-11-25 18:15:39,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:39,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-11-25 18:15:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,392 INFO L130 PetriNetUnfolder]: 307/538 cut-off events. [2022-11-25 18:15:39,392 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-11-25 18:15:39,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 538 events. 307/538 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2477 event pairs, 118 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1549. Up to 284 conditions per place. [2022-11-25 18:15:39,397 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2022-11-25 18:15:39,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 271 flow [2022-11-25 18:15:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2022-11-25 18:15:39,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505307855626327 [2022-11-25 18:15:39,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2022-11-25 18:15:39,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2022-11-25 18:15:39,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2022-11-25 18:15:39,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,405 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 105 flow. Second operand 3 states and 238 transitions. [2022-11-25 18:15:39,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 271 flow [2022-11-25 18:15:39,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:39,414 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 131 flow [2022-11-25 18:15:39,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2022-11-25 18:15:39,416 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-11-25 18:15:39,416 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 131 flow [2022-11-25 18:15:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:15:39,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1277460958, now seen corresponding path program 1 times [2022-11-25 18:15:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508886776] [2022-11-25 18:15:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:39,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508886776] [2022-11-25 18:15:39,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508886776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:39,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:39,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:15:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793242970] [2022-11-25 18:15:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:39,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-11-25 18:15:39,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:39,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-11-25 18:15:39,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,579 INFO L130 PetriNetUnfolder]: 285/510 cut-off events. [2022-11-25 18:15:39,579 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-11-25 18:15:39,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 510 events. 285/510 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2344 event pairs, 90 based on Foata normal form. 24/498 useless extension candidates. Maximal degree in co-relation 1628. Up to 308 conditions per place. [2022-11-25 18:15:39,584 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2022-11-25 18:15:39,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 291 flow [2022-11-25 18:15:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-25 18:15:39,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-11-25 18:15:39,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-25 18:15:39,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-25 18:15:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-25 18:15:39,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,590 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 131 flow. Second operand 3 states and 237 transitions. [2022-11-25 18:15:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 291 flow [2022-11-25 18:15:39,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:15:39,593 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 139 flow [2022-11-25 18:15:39,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2022-11-25 18:15:39,595 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-11-25 18:15:39,595 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 139 flow [2022-11-25 18:15:39,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,596 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:15:39,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 946585568, now seen corresponding path program 1 times [2022-11-25 18:15:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634552493] [2022-11-25 18:15:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:39,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634552493] [2022-11-25 18:15:39,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634552493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:39,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:39,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057186487] [2022-11-25 18:15:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:39,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-11-25 18:15:39,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:39,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-11-25 18:15:39,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,751 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2022-11-25 18:15:39,752 INFO L131 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2022-11-25 18:15:39,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 426 events. 237/426 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1793 event pairs, 36 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1392. Up to 388 conditions per place. [2022-11-25 18:15:39,756 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 18:15:39,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 207 flow [2022-11-25 18:15:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2022-11-25 18:15:39,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47983014861995754 [2022-11-25 18:15:39,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2022-11-25 18:15:39,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2022-11-25 18:15:39,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2022-11-25 18:15:39,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,761 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 139 flow. Second operand 3 states and 226 transitions. [2022-11-25 18:15:39,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 207 flow [2022-11-25 18:15:39,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:39,763 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 119 flow [2022-11-25 18:15:39,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2022-11-25 18:15:39,764 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-11-25 18:15:39,764 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 119 flow [2022-11-25 18:15:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:15:39,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2112022885, now seen corresponding path program 1 times [2022-11-25 18:15:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56546730] [2022-11-25 18:15:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:39,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56546730] [2022-11-25 18:15:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56546730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:39,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:39,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:39,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603990583] [2022-11-25 18:15:39,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:39,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:15:39,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:39,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:15:39,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:15:39,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:39,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:39,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:39,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:39,952 INFO L130 PetriNetUnfolder]: 281/500 cut-off events. [2022-11-25 18:15:39,952 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2022-11-25 18:15:39,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 500 events. 281/500 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2193 event pairs, 61 based on Foata normal form. 30/530 useless extension candidates. Maximal degree in co-relation 1637. Up to 216 conditions per place. [2022-11-25 18:15:39,957 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 39 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2022-11-25 18:15:39,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 336 flow [2022-11-25 18:15:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:15:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:15:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-11-25 18:15:39,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48152866242038217 [2022-11-25 18:15:39,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-11-25 18:15:39,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-11-25 18:15:39,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:39,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-11-25 18:15:39,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,963 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 119 flow. Second operand 5 states and 378 transitions. [2022-11-25 18:15:39,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 336 flow [2022-11-25 18:15:39,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:39,966 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 218 flow [2022-11-25 18:15:39,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-11-25 18:15:39,966 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2022-11-25 18:15:39,967 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 218 flow [2022-11-25 18:15:39,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:39,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:39,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:15:39,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2109899696, now seen corresponding path program 1 times [2022-11-25 18:15:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:39,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022762564] [2022-11-25 18:15:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:40,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022762564] [2022-11-25 18:15:40,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022762564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:40,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:40,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117398057] [2022-11-25 18:15:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:15:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:15:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:15:40,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:40,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:40,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:40,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:40,141 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2022-11-25 18:15:40,141 INFO L131 PetriNetUnfolder]: For 890/890 co-relation queries the response was YES. [2022-11-25 18:15:40,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 532 events. 301/532 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2299 event pairs, 47 based on Foata normal form. 18/550 useless extension candidates. Maximal degree in co-relation 1924. Up to 251 conditions per place. [2022-11-25 18:15:40,146 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 40 selfloop transitions, 12 changer transitions 1/53 dead transitions. [2022-11-25 18:15:40,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 444 flow [2022-11-25 18:15:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:15:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:15:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2022-11-25 18:15:40,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764331210191083 [2022-11-25 18:15:40,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2022-11-25 18:15:40,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2022-11-25 18:15:40,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:40,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2022-11-25 18:15:40,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,153 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 218 flow. Second operand 5 states and 374 transitions. [2022-11-25 18:15:40,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 444 flow [2022-11-25 18:15:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 438 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-25 18:15:40,157 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 282 flow [2022-11-25 18:15:40,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2022-11-25 18:15:40,158 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2022-11-25 18:15:40,158 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 282 flow [2022-11-25 18:15:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:40,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:15:40,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2109899515, now seen corresponding path program 1 times [2022-11-25 18:15:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280118971] [2022-11-25 18:15:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:40,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280118971] [2022-11-25 18:15:40,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280118971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:40,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:40,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771245209] [2022-11-25 18:15:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:15:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:15:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:15:40,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:40,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:40,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:40,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:40,346 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2022-11-25 18:15:40,346 INFO L131 PetriNetUnfolder]: For 1452/1452 co-relation queries the response was YES. [2022-11-25 18:15:40,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 608 events. 353/608 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2681 event pairs, 63 based on Foata normal form. 24/632 useless extension candidates. Maximal degree in co-relation 2387. Up to 351 conditions per place. [2022-11-25 18:15:40,352 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2022-11-25 18:15:40,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 533 flow [2022-11-25 18:15:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:15:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:15:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2022-11-25 18:15:40,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4840764331210191 [2022-11-25 18:15:40,354 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2022-11-25 18:15:40,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2022-11-25 18:15:40,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:40,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2022-11-25 18:15:40,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,358 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 282 flow. Second operand 5 states and 380 transitions. [2022-11-25 18:15:40,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 533 flow [2022-11-25 18:15:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 520 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:40,365 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 375 flow [2022-11-25 18:15:40,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2022-11-25 18:15:40,366 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2022-11-25 18:15:40,366 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 375 flow [2022-11-25 18:15:40,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:40,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:40,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:15:40,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2109899514, now seen corresponding path program 1 times [2022-11-25 18:15:40,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:40,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621155011] [2022-11-25 18:15:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:40,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621155011] [2022-11-25 18:15:40,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621155011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:40,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:40,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:15:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106344356] [2022-11-25 18:15:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:15:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:15:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:15:40,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:40,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:40,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:40,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:40,533 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2022-11-25 18:15:40,533 INFO L131 PetriNetUnfolder]: For 1723/1723 co-relation queries the response was YES. [2022-11-25 18:15:40,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1822 conditions, 432 events. 252/432 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1642 event pairs, 178 based on Foata normal form. 48/480 useless extension candidates. Maximal degree in co-relation 1790. Up to 432 conditions per place. [2022-11-25 18:15:40,537 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 18:15:40,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 306 flow [2022-11-25 18:15:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:15:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:15:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-11-25 18:15:40,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4607218683651805 [2022-11-25 18:15:40,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-11-25 18:15:40,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-11-25 18:15:40,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:40,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-11-25 18:15:40,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,542 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 375 flow. Second operand 3 states and 217 transitions. [2022-11-25 18:15:40,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 306 flow [2022-11-25 18:15:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 257 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-11-25 18:15:40,549 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 203 flow [2022-11-25 18:15:40,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2022-11-25 18:15:40,551 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2022-11-25 18:15:40,551 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 203 flow [2022-11-25 18:15:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:40,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:40,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:15:40,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1048201497, now seen corresponding path program 1 times [2022-11-25 18:15:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:40,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339226398] [2022-11-25 18:15:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:40,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:40,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339226398] [2022-11-25 18:15:40,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339226398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:40,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785468324] [2022-11-25 18:15:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:40,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:40,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:40,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:15:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:15:40,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785468324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:15:40,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:15:40,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:15:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440885898] [2022-11-25 18:15:40,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:40,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:15:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:15:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:15:40,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:40,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 203 flow. Second operand has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:40,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:40,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:40,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:41,097 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2022-11-25 18:15:41,098 INFO L131 PetriNetUnfolder]: For 1524/1524 co-relation queries the response was YES. [2022-11-25 18:15:41,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 622 events. 361/622 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2505 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2276. Up to 203 conditions per place. [2022-11-25 18:15:41,103 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2022-11-25 18:15:41,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 610 flow [2022-11-25 18:15:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 666 transitions. [2022-11-25 18:15:41,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4713375796178344 [2022-11-25 18:15:41,105 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 666 transitions. [2022-11-25 18:15:41,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 666 transitions. [2022-11-25 18:15:41,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:41,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 666 transitions. [2022-11-25 18:15:41,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:41,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:41,111 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:41,111 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 203 flow. Second operand 9 states and 666 transitions. [2022-11-25 18:15:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 610 flow [2022-11-25 18:15:41,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 607 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:15:41,116 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 468 flow [2022-11-25 18:15:41,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2022-11-25 18:15:41,117 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2022-11-25 18:15:41,117 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 468 flow [2022-11-25 18:15:41,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:41,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:41,118 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:41,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:41,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:15:41,323 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:41,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -828439880, now seen corresponding path program 1 times [2022-11-25 18:15:41,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:41,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557006429] [2022-11-25 18:15:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:41,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:41,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557006429] [2022-11-25 18:15:41,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557006429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:41,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128604848] [2022-11-25 18:15:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:41,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:41,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:41,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:15:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:41,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:15:41,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:41,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128604848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:15:41,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:15:41,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 18:15:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936682866] [2022-11-25 18:15:41,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:41,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:15:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:15:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:15:41,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:41,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 468 flow. Second operand has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:41,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:41,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:41,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:42,046 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2022-11-25 18:15:42,046 INFO L131 PetriNetUnfolder]: For 4638/4638 co-relation queries the response was YES. [2022-11-25 18:15:42,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3851 conditions, 826 events. 481/826 cut-off events. For 4638/4638 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3308 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3820. Up to 299 conditions per place. [2022-11-25 18:15:42,052 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2022-11-25 18:15:42,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1178 flow [2022-11-25 18:15:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:15:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 18:15:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1031 transitions. [2022-11-25 18:15:42,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46906278434940857 [2022-11-25 18:15:42,056 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1031 transitions. [2022-11-25 18:15:42,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1031 transitions. [2022-11-25 18:15:42,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:42,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1031 transitions. [2022-11-25 18:15:42,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.64285714285714) internal successors, (1031), 14 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:42,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:42,064 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:42,065 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 468 flow. Second operand 14 states and 1031 transitions. [2022-11-25 18:15:42,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1178 flow [2022-11-25 18:15:42,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1076 flow, removed 46 selfloop flow, removed 3 redundant places. [2022-11-25 18:15:42,079 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 741 flow [2022-11-25 18:15:42,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=741, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2022-11-25 18:15:42,080 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2022-11-25 18:15:42,080 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 741 flow [2022-11-25 18:15:42,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:42,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:42,081 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:42,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:42,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 18:15:42,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash -698079973, now seen corresponding path program 2 times [2022-11-25 18:15:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:42,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208998109] [2022-11-25 18:15:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208998109] [2022-11-25 18:15:42,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208998109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388939688] [2022-11-25 18:15:42,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:15:42,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:42,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:42,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:42,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:15:42,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:15:42,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:15:42,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:15:42,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:42,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:42,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388939688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:15:42,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:15:42,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-25 18:15:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940523996] [2022-11-25 18:15:42,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 18:15:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 18:15:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:15:42,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:42,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 741 flow. Second operand has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:42,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:42,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:42,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:43,217 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2022-11-25 18:15:43,217 INFO L131 PetriNetUnfolder]: For 9851/9851 co-relation queries the response was YES. [2022-11-25 18:15:43,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1306 events. 761/1306 cut-off events. For 9851/9851 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5595 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6408. Up to 499 conditions per place. [2022-11-25 18:15:43,228 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2022-11-25 18:15:43,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1962 flow [2022-11-25 18:15:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 18:15:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-25 18:15:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1391 transitions. [2022-11-25 18:15:43,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4663090848139457 [2022-11-25 18:15:43,233 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1391 transitions. [2022-11-25 18:15:43,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1391 transitions. [2022-11-25 18:15:43,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:43,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1391 transitions. [2022-11-25 18:15:43,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.21052631578948) internal successors, (1391), 19 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:43,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:43,244 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:43,244 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 741 flow. Second operand 19 states and 1391 transitions. [2022-11-25 18:15:43,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1962 flow [2022-11-25 18:15:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1903 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-11-25 18:15:43,297 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1413 flow [2022-11-25 18:15:43,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1413, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2022-11-25 18:15:43,298 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2022-11-25 18:15:43,298 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1413 flow [2022-11-25 18:15:43,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:43,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:43,299 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:43,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:43,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 18:15:43,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash 975283104, now seen corresponding path program 2 times [2022-11-25 18:15:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:43,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809783674] [2022-11-25 18:15:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:43,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809783674] [2022-11-25 18:15:43,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809783674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:43,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952835546] [2022-11-25 18:15:43,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:15:43,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:43,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:43,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:43,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:15:43,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:15:43,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:15:43,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:15:43,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:43,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:44,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952835546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:15:44,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:15:44,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-25 18:15:44,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323073260] [2022-11-25 18:15:44,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:44,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 18:15:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 18:15:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-25 18:15:44,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:44,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1413 flow. Second operand has 28 states, 28 states have (on average 68.35714285714286) internal successors, (1914), 28 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:44,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:44,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:44,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:45,594 INFO L130 PetriNetUnfolder]: 1429/2466 cut-off events. [2022-11-25 18:15:45,594 INFO L131 PetriNetUnfolder]: For 30261/30261 co-relation queries the response was YES. [2022-11-25 18:15:45,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13149 conditions, 2466 events. 1429/2466 cut-off events. For 30261/30261 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11186 event pairs, 67 based on Foata normal form. 156/2622 useless extension candidates. Maximal degree in co-relation 13098. Up to 991 conditions per place. [2022-11-25 18:15:45,624 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2022-11-25 18:15:45,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 321 transitions, 4017 flow [2022-11-25 18:15:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 18:15:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-25 18:15:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2492 transitions. [2022-11-25 18:15:45,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668415136755339 [2022-11-25 18:15:45,636 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2492 transitions. [2022-11-25 18:15:45,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2492 transitions. [2022-11-25 18:15:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:45,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2492 transitions. [2022-11-25 18:15:45,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 73.29411764705883) internal successors, (2492), 34 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:45,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 157.0) internal successors, (5495), 35 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:45,662 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 157.0) internal successors, (5495), 35 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:45,662 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1413 flow. Second operand 34 states and 2492 transitions. [2022-11-25 18:15:45,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 321 transitions, 4017 flow [2022-11-25 18:15:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3942 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-11-25 18:15:45,772 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3057 flow [2022-11-25 18:15:45,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3057, PETRI_PLACES=154, PETRI_TRANSITIONS=189} [2022-11-25 18:15:45,773 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 129 predicate places. [2022-11-25 18:15:45,773 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3057 flow [2022-11-25 18:15:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 68.35714285714286) internal successors, (1914), 28 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:45,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:45,775 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:45,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 18:15:45,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:45,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 126147915, now seen corresponding path program 3 times [2022-11-25 18:15:45,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:45,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933127148] [2022-11-25 18:15:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:46,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933127148] [2022-11-25 18:15:46,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933127148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827391211] [2022-11-25 18:15:46,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:15:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:46,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:46,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:15:46,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-25 18:15:46,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:15:46,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 18:15:46,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:46,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:15:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:47,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827391211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:15:47,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:15:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-25 18:15:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539704433] [2022-11-25 18:15:47,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:15:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 18:15:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 18:15:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 18:15:47,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:47,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 189 transitions, 3057 flow. Second operand has 48 states, 48 states have (on average 68.20833333333333) internal successors, (3274), 48 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:47,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:47,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:47,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:50,871 INFO L130 PetriNetUnfolder]: 2885/5042 cut-off events. [2022-11-25 18:15:50,871 INFO L131 PetriNetUnfolder]: For 110975/110975 co-relation queries the response was YES. [2022-11-25 18:15:50,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28563 conditions, 5042 events. 2885/5042 cut-off events. For 110975/110975 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 24657 event pairs, 121 based on Foata normal form. 292/5334 useless extension candidates. Maximal degree in co-relation 28490. Up to 2111 conditions per place. [2022-11-25 18:15:50,925 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2022-11-25 18:15:50,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 607 transitions, 8895 flow [2022-11-25 18:15:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-25 18:15:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-25 18:15:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4319 transitions. [2022-11-25 18:15:50,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46626362949368455 [2022-11-25 18:15:50,934 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4319 transitions. [2022-11-25 18:15:50,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4319 transitions. [2022-11-25 18:15:50,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:50,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4319 transitions. [2022-11-25 18:15:50,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 73.20338983050847) internal successors, (4319), 59 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:51,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 157.0) internal successors, (9420), 60 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:51,059 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 157.0) internal successors, (9420), 60 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:51,059 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3057 flow. Second operand 59 states and 4319 transitions. [2022-11-25 18:15:51,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 607 transitions, 8895 flow [2022-11-25 18:15:51,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 607 transitions, 8803 flow, removed 32 selfloop flow, removed 7 redundant places. [2022-11-25 18:15:51,368 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 7140 flow [2022-11-25 18:15:51,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7140, PETRI_PLACES=240, PETRI_TRANSITIONS=376} [2022-11-25 18:15:51,369 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2022-11-25 18:15:51,370 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 7140 flow [2022-11-25 18:15:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 68.20833333333333) internal successors, (3274), 48 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:51,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:51,372 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:51,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:15:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:51,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:15:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -651552960, now seen corresponding path program 3 times [2022-11-25 18:15:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:51,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452072000] [2022-11-25 18:15:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452072000] [2022-11-25 18:15:53,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452072000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:15:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195607431] [2022-11-25 18:15:53,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:15:53,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:15:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:15:53,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:15:53,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:15:53,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-11-25 18:15:53,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:15:53,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 18:15:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:15:54,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:15:54,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195607431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:54,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:15:54,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2022-11-25 18:15:54,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677487574] [2022-11-25 18:15:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:54,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:15:54,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:15:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2022-11-25 18:15:54,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-11-25 18:15:54,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 376 transitions, 7140 flow. Second operand has 24 states, 24 states have (on average 69.125) internal successors, (1659), 24 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:54,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:54,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-11-25 18:15:54,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:03,749 INFO L130 PetriNetUnfolder]: 22903/33946 cut-off events. [2022-11-25 18:16:03,749 INFO L131 PetriNetUnfolder]: For 243143/243143 co-relation queries the response was YES. [2022-11-25 18:16:04,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202247 conditions, 33946 events. 22903/33946 cut-off events. For 243143/243143 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 198527 event pairs, 473 based on Foata normal form. 950/34896 useless extension candidates. Maximal degree in co-relation 202149. Up to 19193 conditions per place. [2022-11-25 18:16:04,395 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 0 selfloop transitions, 0 changer transitions 3970/3970 dead transitions. [2022-11-25 18:16:04,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3970 transitions, 77852 flow [2022-11-25 18:16:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:16:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-25 18:16:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1739 transitions. [2022-11-25 18:16:04,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48158404873996125 [2022-11-25 18:16:04,404 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1739 transitions. [2022-11-25 18:16:04,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1739 transitions. [2022-11-25 18:16:04,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:04,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1739 transitions. [2022-11-25 18:16:04,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 75.6086956521739) internal successors, (1739), 23 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:04,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 157.0) internal successors, (3768), 24 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:04,417 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 157.0) internal successors, (3768), 24 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:04,417 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 7140 flow. Second operand 23 states and 1739 transitions. [2022-11-25 18:16:04,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 3970 transitions, 77852 flow [2022-11-25 18:16:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 3970 transitions, 64356 flow, removed 396 selfloop flow, removed 77 redundant places. [2022-11-25 18:16:10,834 INFO L231 Difference]: Finished difference. Result has 177 places, 0 transitions, 0 flow [2022-11-25 18:16:10,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=5075, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=177, PETRI_TRANSITIONS=0} [2022-11-25 18:16:10,835 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2022-11-25 18:16:10,835 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 0 transitions, 0 flow [2022-11-25 18:16:10,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 69.125) internal successors, (1659), 24 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:10,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-25 18:16:10,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-25 18:16:10,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-25 18:16:10,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-25 18:16:10,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-25 18:16:10,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-25 18:16:10,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-25 18:16:10,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-25 18:16:10,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-25 18:16:10,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-25 18:16:10,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-25 18:16:10,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-25 18:16:10,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 18:16:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:16:11,057 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:11,062 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:16:11,062 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:16:11,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:16:11 BasicIcfg [2022-11-25 18:16:11,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:16:11,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:16:11,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:16:11,067 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:16:11,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:15:33" (3/4) ... [2022-11-25 18:16:11,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:16:11,080 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-25 18:16:11,080 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-25 18:16:11,086 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-25 18:16:11,086 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 18:16:11,086 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:16:11,087 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:16:11,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:16:11,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:16:11,129 INFO L158 Benchmark]: Toolchain (without parser) took 38378.67ms. Allocated memory was 132.1MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 100.4MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-25 18:16:11,129 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:16:11,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.28ms. Allocated memory is still 132.1MB. Free memory was 100.4MB in the beginning and 80.1MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 18:16:11,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.28ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:11,130 INFO L158 Benchmark]: Boogie Preprocessor took 59.22ms. Allocated memory is still 132.1MB. Free memory was 78.3MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:11,130 INFO L158 Benchmark]: RCFGBuilder took 514.52ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 62.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:16:11,131 INFO L158 Benchmark]: TraceAbstraction took 37096.07ms. Allocated memory was 132.1MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 61.2MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-25 18:16:11,131 INFO L158 Benchmark]: Witness Printer took 61.25ms. Allocated memory is still 6.1GB. Free memory was 4.9GB in the beginning and 4.9GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:11,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.28ms. Allocated memory is still 132.1MB. Free memory was 100.4MB in the beginning and 80.1MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.28ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.22ms. Allocated memory is still 132.1MB. Free memory was 78.3MB in the beginning and 76.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.52ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 62.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 37096.07ms. Allocated memory was 132.1MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 61.2MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 61.25ms. Allocated memory is still 6.1GB. Free memory was 4.9GB in the beginning and 4.9GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 81 PlacesBefore, 25 PlacesAfterwards, 79 TransitionsBefore, 21 TransitionsAfterwards, 1870 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1954 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1667, independent: 1642, independent conditional: 0, independent unconditional: 1642, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1253, independent: 1240, independent conditional: 0, independent unconditional: 1240, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1253, independent: 1235, independent conditional: 0, independent unconditional: 1235, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1667, independent: 402, independent conditional: 0, independent unconditional: 402, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 1253, unknown conditional: 0, unknown unconditional: 1253] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.9s, OverallIterations: 18, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3725 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3622 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 282 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2204 IncrementalHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 282 mSolverCounterUnsat, 39 mSDtfsCounter, 2204 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7140occurred in iteration=17, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1140 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 486/1483 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:16:11,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21aa6ee-8f78-4339-bfe1-da830bdb7d14/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE