./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur --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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:39:09,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:39:09,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:39:09,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:39:09,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:39:09,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:39:09,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:39:09,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:39:09,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:39:09,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:39:09,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:39:09,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:39:09,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:39:09,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:39:09,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:39:09,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:39:09,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:39:09,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:39:09,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:39:09,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:39:09,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:39:09,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:39:09,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:39:09,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:39:09,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:39:09,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:39:09,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:39:09,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:39:09,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:39:09,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:39:09,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:39:09,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:39:09,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:39:09,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:39:09,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:39:09,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:39:09,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:39:09,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:39:09,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:39:09,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:39:09,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:39:10,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:39:10,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:39:10,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:39:10,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:39:10,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:39:10,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:39:10,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:39:10,048 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:39:10,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:39:10,048 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:39:10,048 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:39:10,049 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:39:10,049 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:39:10,049 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:39:10,049 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:39:10,049 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:39:10,050 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:39:10,050 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:39:10,050 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:39:10,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:39:10,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:39:10,051 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:39:10,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:39:10,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:39:10,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:39:10,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:39:10,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:39:10,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:39:10,053 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:39:10,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:39:10,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:39:10,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:39:10,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:39:10,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:39:10,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:39:10,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:39:10,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:39:10,058 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:39:10,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:39:10,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:39:10,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:39:10,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:39:10,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:39:10,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:39:10,060 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_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-11-25 23:39:10,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:39:10,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:39:10,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:39:10,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:39:10,362 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:39:10,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-25 23:39:13,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:39:13,791 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:39:13,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-25 23:39:13,815 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/data/369a57303/d5ebfed63789430c84702d0430ca1d0f/FLAG6d8815510 [2022-11-25 23:39:13,829 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/data/369a57303/d5ebfed63789430c84702d0430ca1d0f [2022-11-25 23:39:13,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:39:13,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:39:13,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:39:13,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:39:13,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:39:13,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:39:13" (1/1) ... [2022-11-25 23:39:13,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545a51ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:13, skipping insertion in model container [2022-11-25 23:39:13,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:39:13" (1/1) ... [2022-11-25 23:39:13,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:39:13,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:39:14,403 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_c987382d-f3e9-4a6c-a027-8c1ac884ce01/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-25 23:39:14,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:39:14,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:39:14,522 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_c987382d-f3e9-4a6c-a027-8c1ac884ce01/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-25 23:39:14,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:39:14,627 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:39:14,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14 WrapperNode [2022-11-25 23:39:14,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:39:14,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:39:14,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:39:14,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:39:14,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,696 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2022-11-25 23:39:14,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:39:14,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:39:14,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:39:14,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:39:14,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:39:14,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:39:14,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:39:14,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:39:14,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (1/1) ... [2022-11-25 23:39:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:39:14,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:14,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:39:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c987382d-f3e9-4a6c-a027-8c1ac884ce01/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:39:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:39:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:39:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:39:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:39:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:39:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:39:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 23:39:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 23:39:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:39:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:39:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:39:14,846 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:39:15,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:39:15,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:39:15,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:39:15,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:39:15,443 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-25 23:39:15,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:39:15 BoogieIcfgContainer [2022-11-25 23:39:15,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:39:15,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:39:15,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:39:15,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:39:15,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:39:13" (1/3) ... [2022-11-25 23:39:15,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ceb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:39:15, skipping insertion in model container [2022-11-25 23:39:15,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:39:14" (2/3) ... [2022-11-25 23:39:15,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ceb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:39:15, skipping insertion in model container [2022-11-25 23:39:15,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:39:15" (3/3) ... [2022-11-25 23:39:15,462 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-11-25 23:39:15,472 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:39:15,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:39:15,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 23:39:15,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:39:15,613 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 23:39:15,646 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:39:15,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 143 transitions, 294 flow [2022-11-25 23:39:15,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 143 transitions, 294 flow [2022-11-25 23:39:15,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 143 transitions, 294 flow [2022-11-25 23:39:15,757 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-25 23:39:15,757 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 23:39:15,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-11-25 23:39:15,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 4606 [2022-11-25 23:39:20,627 INFO L134 LiptonReduction]: Checked pairs total: 7802 [2022-11-25 23:39:20,627 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-11-25 23:39:20,643 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 46 transitions, 100 flow [2022-11-25 23:39:20,691 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 287 states, 260 states have (on average 2.603846153846154) internal successors, (677), 286 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:20,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:39:20,735 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;@7593a643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:39:20,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 23:39:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 260 states have (on average 2.603846153846154) internal successors, (677), 286 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:39:20,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:20,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:39:20,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 23:39:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 16912651, now seen corresponding path program 1 times [2022-11-25 23:39:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:20,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469270618] [2022-11-25 23:39:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:21,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469270618] [2022-11-25 23:39:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469270618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:21,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:21,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:39:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699659653] [2022-11-25 23:39:21,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:21,076 INFO L87 Difference]: Start difference. First operand has 287 states, 260 states have (on average 2.603846153846154) internal successors, (677), 286 states have internal predecessors, (677), 0 states have call successors, (0), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:21,221 INFO L93 Difference]: Finished difference Result 246 states and 453 transitions. [2022-11-25 23:39:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:39:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:21,241 INFO L225 Difference]: With dead ends: 246 [2022-11-25 23:39:21,241 INFO L226 Difference]: Without dead ends: 240 [2022-11-25 23:39:21,242 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 [2022-11-25 23:39:21,247 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:21,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-25 23:39:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-25 23:39:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 225 states have (on average 1.968888888888889) internal successors, (443), 239 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 443 transitions. [2022-11-25 23:39:21,323 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 443 transitions. Word has length 4 [2022-11-25 23:39:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 443 transitions. [2022-11-25 23:39:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 443 transitions. [2022-11-25 23:39:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:39:21,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:21,325 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 23:39:21,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:39:21,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 23:39:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash -926756130, now seen corresponding path program 1 times [2022-11-25 23:39:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907876315] [2022-11-25 23:39:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:21,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:39:21,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:39:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:39:21,395 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:39:21,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:39:21,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-25 23:39:21,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 23:39:21,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 23:39:21,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 23:39:21,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 23:39:21,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 23:39:21,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-25 23:39:21,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-25 23:39:21,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-25 23:39:21,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 23:39:21,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 23:39:21,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 23:39:21,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 23:39:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:39:21,405 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:39:21,407 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:39:21,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 23:39:21,432 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 23:39:21,436 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:39:21,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 192 transitions, 402 flow [2022-11-25 23:39:21,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 192 transitions, 402 flow [2022-11-25 23:39:21,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 192 transitions, 402 flow [2022-11-25 23:39:21,559 INFO L130 PetriNetUnfolder]: 31/307 cut-off events. [2022-11-25 23:39:21,559 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 23:39:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 31/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 956 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-25 23:39:21,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 15416 [2022-11-25 23:39:26,546 INFO L134 LiptonReduction]: Checked pairs total: 34805 [2022-11-25 23:39:26,546 INFO L136 LiptonReduction]: Total number of compositions: 165 [2022-11-25 23:39:26,548 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 76 transitions, 170 flow [2022-11-25 23:39:26,807 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6666 states, 6499 states have (on average 3.634559162948146) internal successors, (23621), 6665 states have internal predecessors, (23621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:26,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:39:26,809 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;@7593a643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:39:26,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 23:39:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 6666 states, 6499 states have (on average 3.634559162948146) internal successors, (23621), 6665 states have internal predecessors, (23621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:39:26,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:26,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:39:26,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 23:39:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 911849470, now seen corresponding path program 1 times [2022-11-25 23:39:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:26,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236184903] [2022-11-25 23:39:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:26,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236184903] [2022-11-25 23:39:26,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236184903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:26,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:26,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:39:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906375693] [2022-11-25 23:39:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:26,928 INFO L87 Difference]: Start difference. First operand has 6666 states, 6499 states have (on average 3.634559162948146) internal successors, (23621), 6665 states have internal predecessors, (23621), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:27,131 INFO L93 Difference]: Finished difference Result 6621 states and 18358 transitions. [2022-11-25 23:39:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:39:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:27,178 INFO L225 Difference]: With dead ends: 6621 [2022-11-25 23:39:27,178 INFO L226 Difference]: Without dead ends: 6595 [2022-11-25 23:39:27,178 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 [2022-11-25 23:39:27,184 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2022-11-25 23:39:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6595. [2022-11-25 23:39:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6595 states, 6442 states have (on average 2.839490841353617) internal successors, (18292), 6594 states have internal predecessors, (18292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6595 states to 6595 states and 18292 transitions. [2022-11-25 23:39:27,564 INFO L78 Accepts]: Start accepts. Automaton has 6595 states and 18292 transitions. Word has length 5 [2022-11-25 23:39:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:27,564 INFO L495 AbstractCegarLoop]: Abstraction has 6595 states and 18292 transitions. [2022-11-25 23:39:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6595 states and 18292 transitions. [2022-11-25 23:39:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:39:27,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:27,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:39:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:39:27,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 23:39:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2024508361, now seen corresponding path program 1 times [2022-11-25 23:39:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589945852] [2022-11-25 23:39:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:27,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:27,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589945852] [2022-11-25 23:39:27,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589945852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:27,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:27,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:39:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30199936] [2022-11-25 23:39:27,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:27,670 INFO L87 Difference]: Start difference. First operand 6595 states and 18292 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:27,854 INFO L93 Difference]: Finished difference Result 6234 states and 17247 transitions. [2022-11-25 23:39:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:27,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2022-11-25 23:39:27,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:27,888 INFO L225 Difference]: With dead ends: 6234 [2022-11-25 23:39:27,889 INFO L226 Difference]: Without dead ends: 6234 [2022-11-25 23:39:27,889 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 [2022-11-25 23:39:27,890 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:27,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2022-11-25 23:39:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6234. [2022-11-25 23:39:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6106 states have (on average 2.8245987553226333) internal successors, (17247), 6233 states have internal predecessors, (17247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 17247 transitions. [2022-11-25 23:39:28,153 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 17247 transitions. Word has length 9 [2022-11-25 23:39:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:28,154 INFO L495 AbstractCegarLoop]: Abstraction has 6234 states and 17247 transitions. [2022-11-25 23:39:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 17247 transitions. [2022-11-25 23:39:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:39:28,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:28,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:39:28,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:39:28,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 23:39:28,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2024508338, now seen corresponding path program 1 times [2022-11-25 23:39:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:28,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648843430] [2022-11-25 23:39:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:28,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:39:28,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648843430] [2022-11-25 23:39:28,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648843430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:28,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:28,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:39:28,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121729266] [2022-11-25 23:39:28,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:28,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:28,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:28,219 INFO L87 Difference]: Start difference. First operand 6234 states and 17247 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:28,393 INFO L93 Difference]: Finished difference Result 5873 states and 16202 transitions. [2022-11-25 23:39:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:28,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2022-11-25 23:39:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:28,427 INFO L225 Difference]: With dead ends: 5873 [2022-11-25 23:39:28,427 INFO L226 Difference]: Without dead ends: 5873 [2022-11-25 23:39:28,428 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 [2022-11-25 23:39:28,429 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:28,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5873 states. [2022-11-25 23:39:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5873 to 5873. [2022-11-25 23:39:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5873 states, 5770 states have (on average 2.8079722703639516) internal successors, (16202), 5872 states have internal predecessors, (16202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 16202 transitions. [2022-11-25 23:39:28,675 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 16202 transitions. Word has length 9 [2022-11-25 23:39:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:28,676 INFO L495 AbstractCegarLoop]: Abstraction has 5873 states and 16202 transitions. [2022-11-25 23:39:28,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 16202 transitions. [2022-11-25 23:39:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:39:28,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:28,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:39:28,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 23:39:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash 979960638, now seen corresponding path program 1 times [2022-11-25 23:39:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998828478] [2022-11-25 23:39:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:28,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:28,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998828478] [2022-11-25 23:39:28,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998828478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:28,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:28,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:39:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586682827] [2022-11-25 23:39:28,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:28,735 INFO L87 Difference]: Start difference. First operand 5873 states and 16202 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-25 23:39:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:28,945 INFO L93 Difference]: Finished difference Result 6880 states and 17909 transitions. [2022-11-25 23:39:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-25 23:39:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:28,981 INFO L225 Difference]: With dead ends: 6880 [2022-11-25 23:39:28,981 INFO L226 Difference]: Without dead ends: 6856 [2022-11-25 23:39:28,981 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 [2022-11-25 23:39:28,982 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:28,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2022-11-25 23:39:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6378. [2022-11-25 23:39:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6287 states have (on average 2.717989502147288) internal successors, (17088), 6377 states have internal predecessors, (17088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 17088 transitions. [2022-11-25 23:39:29,289 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 17088 transitions. Word has length 10 [2022-11-25 23:39:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:29,289 INFO L495 AbstractCegarLoop]: Abstraction has 6378 states and 17088 transitions. [2022-11-25 23:39:29,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-25 23:39:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 17088 transitions. [2022-11-25 23:39:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:39:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:29,291 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:39:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:39:29,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 23:39:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 67732177, now seen corresponding path program 1 times [2022-11-25 23:39:29,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:29,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007344653] [2022-11-25 23:39:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:39:29,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:39:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:39:29,320 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:39:29,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:39:29,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 23:39:29,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 23:39:29,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 23:39:29,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 23:39:29,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 23:39:29,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 23:39:29,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 23:39:29,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 23:39:29,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-25 23:39:29,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-25 23:39:29,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-25 23:39:29,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 23:39:29,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 23:39:29,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 23:39:29,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 23:39:29,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 23:39:29,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 23:39:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:39:29,325 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-25 23:39:29,325 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:39:29,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 23:39:29,438 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 23:39:29,444 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:39:29,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 241 transitions, 512 flow [2022-11-25 23:39:29,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 241 transitions, 512 flow [2022-11-25 23:39:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-11-25 23:39:29,556 INFO L130 PetriNetUnfolder]: 50/473 cut-off events. [2022-11-25 23:39:29,556 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 23:39:29,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 473 events. 50/473 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1741 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-11-25 23:39:29,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 30174 [2022-11-25 23:39:35,152 INFO L134 LiptonReduction]: Checked pairs total: 74145 [2022-11-25 23:39:35,152 INFO L136 LiptonReduction]: Total number of compositions: 204 [2022-11-25 23:39:35,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 102 transitions, 234 flow [2022-11-25 23:39:39,584 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129539 states, 128582 states have (on average 4.810377813379789) internal successors, (618528), 129538 states have internal predecessors, (618528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:39,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:39:39,586 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;@7593a643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:39:39,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 23:39:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 129539 states, 128582 states have (on average 4.810377813379789) internal successors, (618528), 129538 states have internal predecessors, (618528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:39:39,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:39,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:39:39,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 23:39:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1382519009, now seen corresponding path program 1 times [2022-11-25 23:39:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:39,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781080387] [2022-11-25 23:39:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:39,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:39,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:39,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781080387] [2022-11-25 23:39:39,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781080387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:39,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:39,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:39:39,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552896650] [2022-11-25 23:39:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:40,092 INFO L87 Difference]: Start difference. First operand has 129539 states, 128582 states have (on average 4.810377813379789) internal successors, (618528), 129538 states have internal predecessors, (618528), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:42,317 INFO L93 Difference]: Finished difference Result 122300 states and 450951 transitions. [2022-11-25 23:39:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:42,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:39:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:44,084 INFO L225 Difference]: With dead ends: 122300 [2022-11-25 23:39:44,098 INFO L226 Difference]: Without dead ends: 122167 [2022-11-25 23:39:44,099 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 [2022-11-25 23:39:44,100 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 10 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 [2022-11-25 23:39:44,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 10 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122167 states. [2022-11-25 23:39:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122167 to 122167. [2022-11-25 23:39:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122167 states, 121373 states have (on average 3.711838712069406) internal successors, (450517), 122166 states have internal predecessors, (450517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122167 states to 122167 states and 450517 transitions. [2022-11-25 23:39:50,250 INFO L78 Accepts]: Start accepts. Automaton has 122167 states and 450517 transitions. Word has length 5 [2022-11-25 23:39:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:50,250 INFO L495 AbstractCegarLoop]: Abstraction has 122167 states and 450517 transitions. [2022-11-25 23:39:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 122167 states and 450517 transitions. [2022-11-25 23:39:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:39:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:50,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:39:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:39:50,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 23:39:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1382519042, now seen corresponding path program 1 times [2022-11-25 23:39:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188745417] [2022-11-25 23:39:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:39:50,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:50,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188745417] [2022-11-25 23:39:50,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188745417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:50,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:50,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:39:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049626986] [2022-11-25 23:39:50,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:50,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:50,283 INFO L87 Difference]: Start difference. First operand 122167 states and 450517 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:51,934 INFO L93 Difference]: Finished difference Result 122148 states and 450480 transitions. [2022-11-25 23:39:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:39:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:52,538 INFO L225 Difference]: With dead ends: 122148 [2022-11-25 23:39:52,538 INFO L226 Difference]: Without dead ends: 122148 [2022-11-25 23:39:52,539 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 [2022-11-25 23:39:52,539 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:52,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 20 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122148 states. [2022-11-25 23:39:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122148 to 122148. [2022-11-25 23:39:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122148 states, 121359 states have (on average 3.711962030010135) internal successors, (450480), 122147 states have internal predecessors, (450480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122148 states to 122148 states and 450480 transitions. [2022-11-25 23:39:57,635 INFO L78 Accepts]: Start accepts. Automaton has 122148 states and 450480 transitions. Word has length 5 [2022-11-25 23:39:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:57,636 INFO L495 AbstractCegarLoop]: Abstraction has 122148 states and 450480 transitions. [2022-11-25 23:39:57,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 122148 states and 450480 transitions. [2022-11-25 23:39:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:39:57,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:57,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:39:57,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:39:57,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 23:39:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash -954376125, now seen corresponding path program 1 times [2022-11-25 23:39:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:39:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375809278] [2022-11-25 23:39:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:39:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:39:58,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:39:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375809278] [2022-11-25 23:39:58,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375809278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:58,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:39:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225997884] [2022-11-25 23:39:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:39:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:39:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:39:58,513 INFO L87 Difference]: Start difference. First operand 122148 states and 450480 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:59,357 INFO L93 Difference]: Finished difference Result 114928 states and 423082 transitions. [2022-11-25 23:39:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:39:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2022-11-25 23:39:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:40:00,575 INFO L225 Difference]: With dead ends: 114928 [2022-11-25 23:40:00,575 INFO L226 Difference]: Without dead ends: 114928 [2022-11-25 23:40:00,575 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 [2022-11-25 23:40:00,576 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:40:00,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 18 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:40:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114928 states. [2022-11-25 23:40:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114928 to 114928. [2022-11-25 23:40:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114928 states, 114289 states have (on average 3.7018610714941946) internal successors, (423082), 114927 states have internal predecessors, (423082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114928 states to 114928 states and 423082 transitions. [2022-11-25 23:40:04,730 INFO L78 Accepts]: Start accepts. Automaton has 114928 states and 423082 transitions. Word has length 9 [2022-11-25 23:40:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:40:04,730 INFO L495 AbstractCegarLoop]: Abstraction has 114928 states and 423082 transitions. [2022-11-25 23:40:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 114928 states and 423082 transitions. [2022-11-25 23:40:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:40:04,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:04,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:04,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:40:04,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 23:40:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1266898827, now seen corresponding path program 1 times [2022-11-25 23:40:04,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:40:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318199727] [2022-11-25 23:40:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:40:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:40:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:40:04,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:40:04,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318199727] [2022-11-25 23:40:04,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318199727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:40:04,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:40:04,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:40:04,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935154319] [2022-11-25 23:40:04,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:40:04,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:40:04,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:40:04,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:40:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:40:04,788 INFO L87 Difference]: Start difference. First operand 114928 states and 423082 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-25 23:40:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:40:06,664 INFO L93 Difference]: Finished difference Result 144885 states and 500647 transitions. [2022-11-25 23:40:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:40:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-25 23:40:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:40:07,268 INFO L225 Difference]: With dead ends: 144885 [2022-11-25 23:40:07,268 INFO L226 Difference]: Without dead ends: 144741 [2022-11-25 23:40:07,269 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 [2022-11-25 23:40:07,269 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:40:07,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 22 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:40:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144741 states.