./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:12:54,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:12:54,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:12:54,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:12:54,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:12:54,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:12:54,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:12:54,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:12:55,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:12:55,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:12:55,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:12:55,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:12:55,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:12:55,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:12:55,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:12:55,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:12:55,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:12:55,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:12:55,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:12:55,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:12:55,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:12:55,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:12:55,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:12:55,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:12:55,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:12:55,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:12:55,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:12:55,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:12:55,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:12:55,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:12:55,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:12:55,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:12:55,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:12:55,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:12:55,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:12:55,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:12:55,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:12:55,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:12:55,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:12:55,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:12:55,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:12:55,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:12:55,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:12:55,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:12:55,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:12:55,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:12:55,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:12:55,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:12:55,087 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:12:55,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:12:55,088 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:12:55,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:12:55,088 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:12:55,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:12:55,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:12:55,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:12:55,089 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:12:55,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:12:55,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:12:55,090 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:12:55,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:12:55,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:12:55,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:12:55,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:12:55,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:12:55,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:12:55,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:12:55,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:12:55,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:12:55,092 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:12:55,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:12:55,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:12:55,093 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:12:55,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:12:55,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:12:55,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:12:55,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:55,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:12:55,094 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:12:55,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:12:55,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:12:55,095 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:12:55,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:12:55,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:12:55,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:12:55,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-11-22 02:12:55,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:12:55,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:12:55,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:12:55,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:12:55,379 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:12:55,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-22 02:12:58,594 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:12:58,925 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:12:58,926 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-22 02:12:58,946 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/data/f92affaf8/c1cd894fd4c945b8b25bbb13fc632c19/FLAG6cdfd9fe1 [2022-11-22 02:12:58,961 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/data/f92affaf8/c1cd894fd4c945b8b25bbb13fc632c19 [2022-11-22 02:12:58,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:12:58,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:12:58,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:58,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:12:58,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:12:58,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:58" (1/1) ... [2022-11-22 02:12:58,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b27f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:58, skipping insertion in model container [2022-11-22 02:12:58,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:58" (1/1) ... [2022-11-22 02:12:58,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:12:59,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:12:59,592 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_b4ba5e3d-9bc8-4305-8281-e876a40c4030/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-22 02:12:59,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:59,644 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:12:59,680 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_b4ba5e3d-9bc8-4305-8281-e876a40c4030/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-22 02:12:59,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:59,752 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:12:59,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59 WrapperNode [2022-11-22 02:12:59,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:59,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:59,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:12:59,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:12:59,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,830 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-22 02:12:59,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:59,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:12:59,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:12:59,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:12:59,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:12:59,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:12:59,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:12:59,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:12:59,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (1/1) ... [2022-11-22 02:12:59,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:59,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:59,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:12:59,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:12:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:12:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:12:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:12:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:12:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 02:12:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:12:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 02:12:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 02:12:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:12:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:12:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:12:59,974 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:13:00,176 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:13:00,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:13:00,586 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:13:00,596 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:13:00,597 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-22 02:13:00,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:00 BoogieIcfgContainer [2022-11-22 02:13:00,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:13:00,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:13:00,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:13:00,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:13:00,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:12:58" (1/3) ... [2022-11-22 02:13:00,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cade7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:00, skipping insertion in model container [2022-11-22 02:13:00,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:59" (2/3) ... [2022-11-22 02:13:00,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cade7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:00, skipping insertion in model container [2022-11-22 02:13:00,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:00" (3/3) ... [2022-11-22 02:13:00,608 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-11-22 02:13:00,619 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:13:00,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:13:00,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-22 02:13:00,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:13:00,748 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 02:13:00,794 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:13:00,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 223 transitions, 454 flow [2022-11-22 02:13:00,818 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 223 transitions, 454 flow [2022-11-22 02:13:00,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-22 02:13:01,010 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-22 02:13:01,017 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-22 02:13:01,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1036 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-22 02:13:01,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 13706 [2022-11-22 02:13:06,077 INFO L134 LiptonReduction]: Checked pairs total: 22460 [2022-11-22 02:13:06,077 INFO L136 LiptonReduction]: Total number of compositions: 219 [2022-11-22 02:13:06,093 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 81 transitions, 170 flow [2022-11-22 02:13:06,190 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 646 states, 593 states have (on average 3.040472175379427) internal successors, (1803), 645 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:06,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:13:06,217 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=FINITE_AUTOMATA, 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;@1fd66825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:13:06,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-22 02:13:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 646 states, 593 states have (on average 3.040472175379427) internal successors, (1803), 645 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 02:13:06,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:06,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 02:13:06,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash 28632, now seen corresponding path program 1 times [2022-11-22 02:13:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137002400] [2022-11-22 02:13:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:06,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:06,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137002400] [2022-11-22 02:13:06,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137002400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:06,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:13:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248364434] [2022-11-22 02:13:06,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:13:06,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:13:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:06,483 INFO L87 Difference]: Start difference. First operand has 646 states, 593 states have (on average 3.040472175379427) internal successors, (1803), 645 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:06,640 INFO L93 Difference]: Finished difference Result 645 states and 1264 transitions. [2022-11-22 02:13:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:13:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-22 02:13:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:06,666 INFO L225 Difference]: With dead ends: 645 [2022-11-22 02:13:06,666 INFO L226 Difference]: Without dead ends: 627 [2022-11-22 02:13:06,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:06,677 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:06,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-22 02:13:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-11-22 02:13:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 577 states have (on average 2.1386481802426345) internal successors, (1234), 626 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1234 transitions. [2022-11-22 02:13:06,787 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1234 transitions. Word has length 2 [2022-11-22 02:13:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:06,787 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1234 transitions. [2022-11-22 02:13:06,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1234 transitions. [2022-11-22 02:13:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 02:13:06,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:06,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 02:13:06,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:13:06,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash 28653, now seen corresponding path program 1 times [2022-11-22 02:13:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:06,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564002330] [2022-11-22 02:13:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:06,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:06,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564002330] [2022-11-22 02:13:06,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564002330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:06,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:06,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:13:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082433411] [2022-11-22 02:13:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:06,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:06,922 INFO L87 Difference]: Start difference. First operand 627 states and 1234 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:07,046 INFO L93 Difference]: Finished difference Result 628 states and 1235 transitions. [2022-11-22 02:13:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-22 02:13:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:07,055 INFO L225 Difference]: With dead ends: 628 [2022-11-22 02:13:07,055 INFO L226 Difference]: Without dead ends: 628 [2022-11-22 02:13:07,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:07,058 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:07,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-22 02:13:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-22 02:13:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 578 states have (on average 2.1366782006920415) internal successors, (1235), 627 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1235 transitions. [2022-11-22 02:13:07,089 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1235 transitions. Word has length 2 [2022-11-22 02:13:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:07,090 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1235 transitions. [2022-11-22 02:13:07,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1235 transitions. [2022-11-22 02:13:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:13:07,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:07,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:13:07,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:13:07,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash 889864, now seen corresponding path program 1 times [2022-11-22 02:13:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:07,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879732039] [2022-11-22 02:13:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:07,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:07,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879732039] [2022-11-22 02:13:07,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879732039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:07,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:07,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799611900] [2022-11-22 02:13:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:07,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:07,210 INFO L87 Difference]: Start difference. First operand 628 states and 1235 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:07,294 INFO L93 Difference]: Finished difference Result 627 states and 1234 transitions. [2022-11-22 02:13:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:13:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:07,298 INFO L225 Difference]: With dead ends: 627 [2022-11-22 02:13:07,298 INFO L226 Difference]: Without dead ends: 627 [2022-11-22 02:13:07,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:07,302 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:07,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 9 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-22 02:13:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-11-22 02:13:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 578 states have (on average 2.134948096885813) internal successors, (1234), 626 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1234 transitions. [2022-11-22 02:13:07,325 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1234 transitions. Word has length 3 [2022-11-22 02:13:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:07,326 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1234 transitions. [2022-11-22 02:13:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1234 transitions. [2022-11-22 02:13:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:13:07,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:07,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:13:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:13:07,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 742018901, now seen corresponding path program 1 times [2022-11-22 02:13:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461223849] [2022-11-22 02:13:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:07,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:07,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461223849] [2022-11-22 02:13:07,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461223849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:07,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131447056] [2022-11-22 02:13:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:07,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:13:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:07,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:13:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:07,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:07,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131447056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:07,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976772481] [2022-11-22 02:13:07,692 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:13:07,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:07,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-22 02:13:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96380571] [2022-11-22 02:13:07,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:13:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:13:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:13:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:07,697 INFO L87 Difference]: Start difference. First operand 627 states and 1234 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:07,824 INFO L93 Difference]: Finished difference Result 630 states and 1237 transitions. [2022-11-22 02:13:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:13:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:07,828 INFO L225 Difference]: With dead ends: 630 [2022-11-22 02:13:07,828 INFO L226 Difference]: Without dead ends: 630 [2022-11-22 02:13:07,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:07,832 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:07,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-22 02:13:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2022-11-22 02:13:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 581 states have (on average 2.1290877796901895) internal successors, (1237), 629 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1237 transitions. [2022-11-22 02:13:07,858 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1237 transitions. Word has length 6 [2022-11-22 02:13:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:07,858 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1237 transitions. [2022-11-22 02:13:07,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1237 transitions. [2022-11-22 02:13:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:13:07,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:07,860 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-22 02:13:07,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:13:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:08,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -300382576, now seen corresponding path program 2 times [2022-11-22 02:13:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:08,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804184875] [2022-11-22 02:13:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:13:08,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804184875] [2022-11-22 02:13:08,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804184875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:08,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:08,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962402845] [2022-11-22 02:13:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:08,170 INFO L87 Difference]: Start difference. First operand 630 states and 1237 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:08,285 INFO L93 Difference]: Finished difference Result 574 states and 1137 transitions. [2022-11-22 02:13:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:13:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:08,288 INFO L225 Difference]: With dead ends: 574 [2022-11-22 02:13:08,288 INFO L226 Difference]: Without dead ends: 574 [2022-11-22 02:13:08,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:08,289 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:08,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 18 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-22 02:13:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-22 02:13:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 539 states have (on average 2.1094619666048238) internal successors, (1137), 573 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1137 transitions. [2022-11-22 02:13:08,306 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1137 transitions. Word has length 9 [2022-11-22 02:13:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:08,307 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 1137 transitions. [2022-11-22 02:13:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1137 transitions. [2022-11-22 02:13:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:13:08,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:08,308 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-22 02:13:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:13:08,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash -904791715, now seen corresponding path program 1 times [2022-11-22 02:13:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:08,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173384148] [2022-11-22 02:13:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:13:08,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:08,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173384148] [2022-11-22 02:13:08,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173384148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:08,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908284325] [2022-11-22 02:13:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:08,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:08,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:08,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:13:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:08,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:13:08,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:13:08,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:13:08,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908284325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:08,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1603654549] [2022-11-22 02:13:08,680 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:13:08,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:08,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-22 02:13:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245905310] [2022-11-22 02:13:08,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:13:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:13:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:13:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:13:08,688 INFO L87 Difference]: Start difference. First operand 574 states and 1137 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:08,844 INFO L93 Difference]: Finished difference Result 580 states and 1143 transitions. [2022-11-22 02:13:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:13:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 02:13:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:08,848 INFO L225 Difference]: With dead ends: 580 [2022-11-22 02:13:08,848 INFO L226 Difference]: Without dead ends: 580 [2022-11-22 02:13:08,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:13:08,849 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:08,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-22 02:13:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-11-22 02:13:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 545 states have (on average 2.0972477064220185) internal successors, (1143), 579 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1143 transitions. [2022-11-22 02:13:08,867 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1143 transitions. Word has length 11 [2022-11-22 02:13:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:08,868 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 1143 transitions. [2022-11-22 02:13:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1143 transitions. [2022-11-22 02:13:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:13:08,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:08,869 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-22 02:13:08,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:09,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-22 02:13:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1515660483, now seen corresponding path program 2 times [2022-11-22 02:13:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:09,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551493648] [2022-11-22 02:13:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:09,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:13:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:09,151 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:13:09,151 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:13:09,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-22 02:13:09,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-22 02:13:09,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-22 02:13:09,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-22 02:13:09,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-22 02:13:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-22 02:13:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-22 02:13:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-22 02:13:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-22 02:13:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-22 02:13:09,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-22 02:13:09,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-22 02:13:09,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-22 02:13:09,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-22 02:13:09,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:13:09,161 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-11-22 02:13:09,163 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 02:13:09,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 02:13:09,201 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 02:13:09,218 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:13:09,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-22 02:13:09,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-22 02:13:09,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-22 02:13:09,320 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-22 02:13:09,320 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-22 02:13:09,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-22 02:13:09,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 42196 [2022-11-22 02:13:15,455 INFO L134 LiptonReduction]: Checked pairs total: 71323 [2022-11-22 02:13:15,456 INFO L136 LiptonReduction]: Total number of compositions: 285 [2022-11-22 02:13:15,457 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 118 transitions, 254 flow [2022-11-22 02:13:16,158 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14925 states, 14632 states have (on average 4.335565882996173) internal successors, (63438), 14924 states have internal predecessors, (63438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:16,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:13:16,169 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=FINITE_AUTOMATA, 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;@1fd66825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:13:16,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-22 02:13:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 14925 states, 14632 states have (on average 4.335565882996173) internal successors, (63438), 14924 states have internal predecessors, (63438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 02:13:16,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:16,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 02:13:16,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 49973, now seen corresponding path program 1 times [2022-11-22 02:13:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:16,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356338832] [2022-11-22 02:13:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:16,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:16,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356338832] [2022-11-22 02:13:16,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356338832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:16,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:16,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:13:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98841168] [2022-11-22 02:13:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:16,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:16,349 INFO L87 Difference]: Start difference. First operand has 14925 states, 14632 states have (on average 4.335565882996173) internal successors, (63438), 14924 states have internal predecessors, (63438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:16,732 INFO L93 Difference]: Finished difference Result 14925 states and 43903 transitions. [2022-11-22 02:13:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-22 02:13:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:16,943 INFO L225 Difference]: With dead ends: 14925 [2022-11-22 02:13:16,943 INFO L226 Difference]: Without dead ends: 14817 [2022-11-22 02:13:16,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:16,944 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:16,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14817 states. [2022-11-22 02:13:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14817 to 14817. [2022-11-22 02:13:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14817 states, 14529 states have (on average 3.00041296716911) internal successors, (43593), 14816 states have internal predecessors, (43593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 43593 transitions. [2022-11-22 02:13:17,703 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 43593 transitions. Word has length 2 [2022-11-22 02:13:17,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:17,703 INFO L495 AbstractCegarLoop]: Abstraction has 14817 states and 43593 transitions. [2022-11-22 02:13:17,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 43593 transitions. [2022-11-22 02:13:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:13:17,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:17,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:13:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:13:17,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1550621, now seen corresponding path program 1 times [2022-11-22 02:13:17,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:17,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30361669] [2022-11-22 02:13:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:17,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:17,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30361669] [2022-11-22 02:13:17,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30361669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:17,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:17,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017589764] [2022-11-22 02:13:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:17,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:17,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:17,832 INFO L87 Difference]: Start difference. First operand 14817 states and 43593 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:18,085 INFO L93 Difference]: Finished difference Result 14816 states and 43592 transitions. [2022-11-22 02:13:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:13:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:18,166 INFO L225 Difference]: With dead ends: 14816 [2022-11-22 02:13:18,166 INFO L226 Difference]: Without dead ends: 14816 [2022-11-22 02:13:18,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:18,167 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 82 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:18,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 15 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14816 states. [2022-11-22 02:13:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14816 to 14816. [2022-11-22 02:13:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14816 states, 14529 states have (on average 3.000344139307592) internal successors, (43592), 14815 states have internal predecessors, (43592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14816 states to 14816 states and 43592 transitions. [2022-11-22 02:13:18,843 INFO L78 Accepts]: Start accepts. Automaton has 14816 states and 43592 transitions. Word has length 3 [2022-11-22 02:13:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:18,844 INFO L495 AbstractCegarLoop]: Abstraction has 14816 states and 43592 transitions. [2022-11-22 02:13:18,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 14816 states and 43592 transitions. [2022-11-22 02:13:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:13:18,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:18,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:18,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:13:18,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1867371773, now seen corresponding path program 1 times [2022-11-22 02:13:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15614650] [2022-11-22 02:13:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:18,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15614650] [2022-11-22 02:13:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15614650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441465250] [2022-11-22 02:13:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:18,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:18,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:13:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:19,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:13:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:19,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:19,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441465250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:19,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [683993668] [2022-11-22 02:13:19,074 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:13:19,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:19,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-22 02:13:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162488141] [2022-11-22 02:13:19,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:13:19,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:13:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:13:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:19,077 INFO L87 Difference]: Start difference. First operand 14816 states and 43592 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:19,478 INFO L93 Difference]: Finished difference Result 14819 states and 43595 transitions. [2022-11-22 02:13:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:19,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:13:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:19,569 INFO L225 Difference]: With dead ends: 14819 [2022-11-22 02:13:19,569 INFO L226 Difference]: Without dead ends: 14819 [2022-11-22 02:13:19,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:19,571 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:13:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2022-11-22 02:13:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 14819. [2022-11-22 02:13:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14819 states, 14532 states have (on average 2.9999311863473714) internal successors, (43595), 14818 states have internal predecessors, (43595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14819 states to 14819 states and 43595 transitions. [2022-11-22 02:13:20,155 INFO L78 Accepts]: Start accepts. Automaton has 14819 states and 43595 transitions. Word has length 7 [2022-11-22 02:13:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:20,155 INFO L495 AbstractCegarLoop]: Abstraction has 14819 states and 43595 transitions. [2022-11-22 02:13:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14819 states and 43595 transitions. [2022-11-22 02:13:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:13:20,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:20,157 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:20,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:20,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:13:20,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash -969057003, now seen corresponding path program 2 times [2022-11-22 02:13:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:20,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19750772] [2022-11-22 02:13:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:13:20,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:20,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19750772] [2022-11-22 02:13:20,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19750772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:20,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:20,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235200519] [2022-11-22 02:13:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:20,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:20,434 INFO L87 Difference]: Start difference. First operand 14819 states and 43595 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:20,762 INFO L93 Difference]: Finished difference Result 14763 states and 43495 transitions. [2022-11-22 02:13:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:13:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:20,822 INFO L225 Difference]: With dead ends: 14763 [2022-11-22 02:13:20,822 INFO L226 Difference]: Without dead ends: 14763 [2022-11-22 02:13:20,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:20,823 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:20,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 30 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14763 states. [2022-11-22 02:13:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14763 to 14763. [2022-11-22 02:13:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14763 states, 14490 states have (on average 3.0017253278122844) internal successors, (43495), 14762 states have internal predecessors, (43495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14763 states to 14763 states and 43495 transitions. [2022-11-22 02:13:21,467 INFO L78 Accepts]: Start accepts. Automaton has 14763 states and 43495 transitions. Word has length 10 [2022-11-22 02:13:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 14763 states and 43495 transitions. [2022-11-22 02:13:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 14763 states and 43495 transitions. [2022-11-22 02:13:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:13:21,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:21,470 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:21,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:13:21,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2045039430, now seen corresponding path program 1 times [2022-11-22 02:13:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:21,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799834041] [2022-11-22 02:13:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:21,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:21,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799834041] [2022-11-22 02:13:21,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799834041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:21,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228041052] [2022-11-22 02:13:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:21,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:21,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:13:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:21,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:13:21,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:21,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:21,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228041052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:21,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459452864] [2022-11-22 02:13:21,800 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:13:21,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:21,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-22 02:13:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654794088] [2022-11-22 02:13:21,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:13:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:13:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:13:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:13:21,807 INFO L87 Difference]: Start difference. First operand 14763 states and 43495 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:22,153 INFO L93 Difference]: Finished difference Result 14769 states and 43501 transitions. [2022-11-22 02:13:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:13:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 02:13:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:22,340 INFO L225 Difference]: With dead ends: 14769 [2022-11-22 02:13:22,340 INFO L226 Difference]: Without dead ends: 14769 [2022-11-22 02:13:22,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:13:22,341 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:22,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:13:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14769 states. [2022-11-22 02:13:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14769 to 14769. [2022-11-22 02:13:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14769 states, 14496 states have (on average 3.000896799116998) internal successors, (43501), 14768 states have internal predecessors, (43501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14769 states to 14769 states and 43501 transitions. [2022-11-22 02:13:22,833 INFO L78 Accepts]: Start accepts. Automaton has 14769 states and 43501 transitions. Word has length 13 [2022-11-22 02:13:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:22,834 INFO L495 AbstractCegarLoop]: Abstraction has 14769 states and 43501 transitions. [2022-11-22 02:13:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 14769 states and 43501 transitions. [2022-11-22 02:13:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:13:22,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:22,834 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:22,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:23,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:13:23,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -678429626, now seen corresponding path program 2 times [2022-11-22 02:13:23,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:23,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431540816] [2022-11-22 02:13:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 02:13:23,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:23,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431540816] [2022-11-22 02:13:23,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431540816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:23,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:23,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:13:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880270018] [2022-11-22 02:13:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:23,338 INFO L87 Difference]: Start difference. First operand 14769 states and 43501 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:23,941 INFO L93 Difference]: Finished difference Result 19255 states and 56031 transitions. [2022-11-22 02:13:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 02:13:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:24,003 INFO L225 Difference]: With dead ends: 19255 [2022-11-22 02:13:24,003 INFO L226 Difference]: Without dead ends: 19255 [2022-11-22 02:13:24,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:13:24,004 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 255 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:24,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 76 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:13:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19255 states. [2022-11-22 02:13:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19255 to 15995. [2022-11-22 02:13:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15995 states, 15734 states have (on average 3.011757976356934) internal successors, (47387), 15994 states have internal predecessors, (47387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15995 states to 15995 states and 47387 transitions. [2022-11-22 02:13:24,607 INFO L78 Accepts]: Start accepts. Automaton has 15995 states and 47387 transitions. Word has length 19 [2022-11-22 02:13:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:24,608 INFO L495 AbstractCegarLoop]: Abstraction has 15995 states and 47387 transitions. [2022-11-22 02:13:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 15995 states and 47387 transitions. [2022-11-22 02:13:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 02:13:24,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:24,609 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:13:24,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash -596139947, now seen corresponding path program 1 times [2022-11-22 02:13:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:24,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642013469] [2022-11-22 02:13:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 02:13:24,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642013469] [2022-11-22 02:13:24,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642013469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:24,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:24,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056810787] [2022-11-22 02:13:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:24,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:24,694 INFO L87 Difference]: Start difference. First operand 15995 states and 47387 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:24,913 INFO L93 Difference]: Finished difference Result 15453 states and 45698 transitions. [2022-11-22 02:13:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 02:13:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:24,992 INFO L225 Difference]: With dead ends: 15453 [2022-11-22 02:13:24,993 INFO L226 Difference]: Without dead ends: 15453 [2022-11-22 02:13:24,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:24,994 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:24,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 15 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15453 states. [2022-11-22 02:13:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15453 to 15453. [2022-11-22 02:13:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15453 states, 15217 states have (on average 3.003088650851022) internal successors, (45698), 15452 states have internal predecessors, (45698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15453 states to 15453 states and 45698 transitions. [2022-11-22 02:13:25,701 INFO L78 Accepts]: Start accepts. Automaton has 15453 states and 45698 transitions. Word has length 20 [2022-11-22 02:13:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:25,702 INFO L495 AbstractCegarLoop]: Abstraction has 15453 states and 45698 transitions. [2022-11-22 02:13:25,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 15453 states and 45698 transitions. [2022-11-22 02:13:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 02:13:25,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:25,703 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:13:25,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash -596140006, now seen corresponding path program 1 times [2022-11-22 02:13:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395122747] [2022-11-22 02:13:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-22 02:13:25,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:25,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395122747] [2022-11-22 02:13:25,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395122747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:25,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:25,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:25,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789319615] [2022-11-22 02:13:25,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:25,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:25,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:25,768 INFO L87 Difference]: Start difference. First operand 15453 states and 45698 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:26,194 INFO L93 Difference]: Finished difference Result 14911 states and 44009 transitions. [2022-11-22 02:13:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:26,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 02:13:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:26,245 INFO L225 Difference]: With dead ends: 14911 [2022-11-22 02:13:26,246 INFO L226 Difference]: Without dead ends: 14911 [2022-11-22 02:13:26,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:26,247 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:26,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 28 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14911 states. [2022-11-22 02:13:26,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14911 to 14911. [2022-11-22 02:13:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14911 states, 14700 states have (on average 2.993809523809524) internal successors, (44009), 14910 states have internal predecessors, (44009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14911 states to 14911 states and 44009 transitions. [2022-11-22 02:13:26,773 INFO L78 Accepts]: Start accepts. Automaton has 14911 states and 44009 transitions. Word has length 20 [2022-11-22 02:13:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:26,773 INFO L495 AbstractCegarLoop]: Abstraction has 14911 states and 44009 transitions. [2022-11-22 02:13:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14911 states and 44009 transitions. [2022-11-22 02:13:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:13:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:26,785 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:26,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:13:26,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1007643646, now seen corresponding path program 1 times [2022-11-22 02:13:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:26,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101026673] [2022-11-22 02:13:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:26,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 02:13:27,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:27,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101026673] [2022-11-22 02:13:27,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101026673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:27,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575804712] [2022-11-22 02:13:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:27,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:27,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:27,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:27,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:13:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:27,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 02:13:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:27,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 02:13:27,359 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 02:13:27,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 02:13:27,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-22 02:13:27,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-22 02:13:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 02:13:27,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 02:13:27,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575804712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:27,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241063966] [2022-11-22 02:13:27,842 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:13:27,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:13:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-11-22 02:13:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111343488] [2022-11-22 02:13:27,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:13:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:13:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:13:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=117, Unknown=3, NotChecked=0, Total=156 [2022-11-22 02:13:27,848 INFO L87 Difference]: Start difference. First operand 14911 states and 44009 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:28,149 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_310 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_310) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 2147483650))) (forall ((|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (< 0 (+ 2147483650 (select (select |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|))))) is different from false [2022-11-22 02:13:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:29,254 INFO L93 Difference]: Finished difference Result 15868 states and 46341 transitions. [2022-11-22 02:13:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:13:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 02:13:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:29,330 INFO L225 Difference]: With dead ends: 15868 [2022-11-22 02:13:29,330 INFO L226 Difference]: Without dead ends: 15868 [2022-11-22 02:13:29,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=222, Unknown=8, NotChecked=32, Total=342 [2022-11-22 02:13:29,333 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 551 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 20 mSolverCounterUnsat, 83 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 83 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:29,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 160 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 710 Invalid, 83 Unknown, 17 Unchecked, 1.1s Time] [2022-11-22 02:13:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15868 states. [2022-11-22 02:13:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15868 to 13885. [2022-11-22 02:13:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13885 states, 13678 states have (on average 2.970755958473461) internal successors, (40634), 13884 states have internal predecessors, (40634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13885 states to 13885 states and 40634 transitions. [2022-11-22 02:13:29,812 INFO L78 Accepts]: Start accepts. Automaton has 13885 states and 40634 transitions. Word has length 22 [2022-11-22 02:13:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:29,812 INFO L495 AbstractCegarLoop]: Abstraction has 13885 states and 40634 transitions. [2022-11-22 02:13:29,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13885 states and 40634 transitions. [2022-11-22 02:13:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:13:29,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:29,813 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 02:13:29,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4ba5e3d-9bc8-4305-8281-e876a40c4030/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 02:13:30,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-22 02:13:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1659746067, now seen corresponding path program 1 times [2022-11-22 02:13:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:30,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895181459] [2022-11-22 02:13:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:30,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:13:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:30,067 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:13:30,067 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:13:30,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-22 02:13:30,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-22 02:13:30,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-22 02:13:30,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-22 02:13:30,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-22 02:13:30,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-22 02:13:30,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-22 02:13:30,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-22 02:13:30,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-22 02:13:30,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-22 02:13:30,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-22 02:13:30,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-22 02:13:30,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-22 02:13:30,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-22 02:13:30,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-22 02:13:30,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-22 02:13:30,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-22 02:13:30,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-22 02:13:30,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-22 02:13:30,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-22 02:13:30,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-22 02:13:30,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-22 02:13:30,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-22 02:13:30,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:13:30,074 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:30,074 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 02:13:30,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 02:13:30,119 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 02:13:30,124 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:13:30,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-22 02:13:30,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-22 02:13:30,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-22 02:13:30,332 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-22 02:13:30,332 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-22 02:13:30,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-22 02:13:30,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 81774 [2022-11-22 02:13:38,245 INFO L134 LiptonReduction]: Checked pairs total: 138132 [2022-11-22 02:13:38,245 INFO L136 LiptonReduction]: Total number of compositions: 365 [2022-11-22 02:13:38,246 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 149 transitions, 328 flow [2022-11-22 02:13:48,613 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 289852 states, 288269 states have (on average 5.7640363688083) internal successors, (1661593), 289851 states have internal predecessors, (1661593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:48,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:13:48,620 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=FINITE_AUTOMATA, 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;@1fd66825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:13:48,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-22 02:13:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 289852 states, 288269 states have (on average 5.7640363688083) internal successors, (1661593), 289851 states have internal predecessors, (1661593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 02:13:49,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:49,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 02:13:49,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-22 02:13:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 76210, now seen corresponding path program 1 times [2022-11-22 02:13:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:49,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653755849] [2022-11-22 02:13:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:49,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653755849] [2022-11-22 02:13:49,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653755849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:49,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:49,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:13:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6977999] [2022-11-22 02:13:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:13:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:13:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:49,517 INFO L87 Difference]: Start difference. First operand has 289852 states, 288269 states have (on average 5.7640363688083) internal successors, (1661593), 289851 states have internal predecessors, (1661593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:13:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:55,852 INFO L93 Difference]: Finished difference Result 289851 states and 1138088 transitions. [2022-11-22 02:13:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:13:55,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-22 02:13:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:59,059 INFO L225 Difference]: With dead ends: 289851 [2022-11-22 02:13:59,059 INFO L226 Difference]: Without dead ends: 289114 [2022-11-22 02:13:59,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:59,060 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:59,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:14:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289114 states. [2022-11-22 02:14:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289114 to 289114. [2022-11-22 02:14:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289114 states, 287540 states have (on average 3.947840300479933) internal successors, (1135162), 289113 states have internal predecessors, (1135162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)