./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:06:32,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:06:32,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:06:32,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:06:32,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:06:32,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:06:32,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:06:32,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:06:32,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:06:32,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:06:32,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:06:32,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:06:32,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:06:32,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:06:32,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:06:32,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:06:32,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:06:32,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:06:32,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:06:32,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:06:32,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:06:33,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:06:33,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:06:33,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:06:33,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:06:33,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:06:33,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:06:33,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:06:33,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:06:33,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:06:33,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:06:33,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:06:33,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:06:33,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:06:33,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:06:33,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:06:33,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:06:33,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:06:33,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:06:33,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:06:33,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:06:33,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:06:33,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:06:33,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:06:33,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:06:33,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:06:33,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:06:33,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:06:33,079 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:06:33,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:06:33,079 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:06:33,079 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:06:33,080 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:06:33,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:06:33,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:06:33,081 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:06:33,081 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:06:33,081 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:06:33,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:06:33,082 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:06:33,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:06:33,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:06:33,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:06:33,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:06:33,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:06:33,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:06:33,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:06:33,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:06:33,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:06:33,084 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:06:33,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:06:33,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:06:33,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:06:33,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:06:33,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:06:33,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:06:33,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:06:33,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:06:33,087 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:06:33,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:06:33,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:06:33,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:06:33,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:06:33,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:06:33,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:06:33,088 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_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-11-22 00:06:33,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:06:33,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:06:33,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:06:33,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:06:33,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:06:33,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-22 00:06:36,595 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:06:36,944 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:06:36,944 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-22 00:06:36,968 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/data/05b2757c8/7d2a36913d2c4267b6f53fa9f166650c/FLAG2dd137f33 [2022-11-22 00:06:36,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/data/05b2757c8/7d2a36913d2c4267b6f53fa9f166650c [2022-11-22 00:06:36,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:06:36,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:06:36,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:06:36,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:06:37,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:06:37,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:36" (1/1) ... [2022-11-22 00:06:37,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3d888a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37, skipping insertion in model container [2022-11-22 00:06:37,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:36" (1/1) ... [2022-11-22 00:06:37,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:06:37,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:06:37,580 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_1cf71899-b550-4a45-a5c0-f966dfd47839/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-22 00:06:37,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:06:37,646 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:06:37,681 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_1cf71899-b550-4a45-a5c0-f966dfd47839/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-22 00:06:37,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:06:37,759 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:06:37,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37 WrapperNode [2022-11-22 00:06:37,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:06:37,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:06:37,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:06:37,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:06:37,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,832 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-11-22 00:06:37,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:06:37,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:06:37,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:06:37,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:06:37,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:06:37,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:06:37,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:06:37,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:06:37,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (1/1) ... [2022-11-22 00:06:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:06:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:06:37,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:06:37,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:06:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:06:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:06:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:06:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:06:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 00:06:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:06:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 00:06:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 00:06:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:06:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:06:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:06:38,000 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:06:38,235 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:06:38,238 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:06:38,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:06:38,712 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:06:38,717 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-22 00:06:38,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:38 BoogieIcfgContainer [2022-11-22 00:06:38,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:06:38,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:06:38,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:06:38,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:06:38,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:06:36" (1/3) ... [2022-11-22 00:06:38,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc6739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:38, skipping insertion in model container [2022-11-22 00:06:38,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:37" (2/3) ... [2022-11-22 00:06:38,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc6739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:38, skipping insertion in model container [2022-11-22 00:06:38,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:38" (3/3) ... [2022-11-22 00:06:38,734 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-11-22 00:06:38,744 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:06:38,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:06:38,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-22 00:06:38,756 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:06:38,880 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 00:06:38,952 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:06:38,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 236 transitions, 480 flow [2022-11-22 00:06:38,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 236 transitions, 480 flow [2022-11-22 00:06:38,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-11-22 00:06:39,110 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-11-22 00:06:39,110 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-22 00:06:39,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1027 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-22 00:06:39,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-11-22 00:06:51,741 INFO L134 LiptonReduction]: Checked pairs total: 26644 [2022-11-22 00:06:51,741 INFO L136 LiptonReduction]: Total number of compositions: 251 [2022-11-22 00:06:51,763 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 84 transitions, 176 flow [2022-11-22 00:06:51,854 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:51,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:06:51,887 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;@5a1784c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:06:51,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-22 00:06:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 00:06:51,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:51,902 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 00:06:51,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 00:06:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash 927, now seen corresponding path program 1 times [2022-11-22 00:06:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:51,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093429430] [2022-11-22 00:06:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:51,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:52,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093429430] [2022-11-22 00:06:52,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093429430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:52,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:52,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 00:06:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677312394] [2022-11-22 00:06:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:52,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:06:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:06:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:06:52,137 INFO L87 Difference]: Start difference. First operand has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:52,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:52,250 INFO L93 Difference]: Finished difference Result 666 states and 1306 transitions. [2022-11-22 00:06:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:06:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-22 00:06:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:52,287 INFO L225 Difference]: With dead ends: 666 [2022-11-22 00:06:52,287 INFO L226 Difference]: Without dead ends: 647 [2022-11-22 00:06:52,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:06:52,293 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:06:52,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:06:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-22 00:06:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-22 00:06:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 598 states have (on average 2.132107023411371) internal successors, (1275), 646 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1275 transitions. [2022-11-22 00:06:52,381 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1275 transitions. Word has length 1 [2022-11-22 00:06:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:52,381 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1275 transitions. [2022-11-22 00:06:52,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1275 transitions. [2022-11-22 00:06:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:06:52,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:52,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:06:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:06:52,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 00:06:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 28627072, now seen corresponding path program 1 times [2022-11-22 00:06:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:52,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70383713] [2022-11-22 00:06:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:52,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70383713] [2022-11-22 00:06:52,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70383713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:52,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:52,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:06:52,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303288601] [2022-11-22 00:06:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:06:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:06:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:52,611 INFO L87 Difference]: Start difference. First operand 647 states and 1275 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-11-22 00:06:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:52,734 INFO L93 Difference]: Finished difference Result 613 states and 1219 transitions. [2022-11-22 00:06:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:06:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2022-11-22 00:06:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:52,738 INFO L225 Difference]: With dead ends: 613 [2022-11-22 00:06:52,738 INFO L226 Difference]: Without dead ends: 613 [2022-11-22 00:06:52,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:52,740 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:06:52,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:06:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-22 00:06:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-11-22 00:06:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 573 states have (on average 2.1273996509598603) internal successors, (1219), 612 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1219 transitions. [2022-11-22 00:06:52,768 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1219 transitions. Word has length 4 [2022-11-22 00:06:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:52,786 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1219 transitions. [2022-11-22 00:06:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2022-11-22 00:06:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1219 transitions. [2022-11-22 00:06:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:06:52,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:52,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:06:52,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:06:52,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 00:06:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash 28627112, now seen corresponding path program 1 times [2022-11-22 00:06:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:52,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504640318] [2022-11-22 00:06:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:52,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:52,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504640318] [2022-11-22 00:06:52,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504640318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:52,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:52,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:06:52,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032499277] [2022-11-22 00:06:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:06:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:06:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:52,976 INFO L87 Difference]: Start difference. First operand 613 states and 1219 transitions. 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) [2022-11-22 00:06:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:53,077 INFO L93 Difference]: Finished difference Result 591 states and 1175 transitions. [2022-11-22 00:06:53,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:06:53,077 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 [2022-11-22 00:06:53,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:53,081 INFO L225 Difference]: With dead ends: 591 [2022-11-22 00:06:53,081 INFO L226 Difference]: Without dead ends: 591 [2022-11-22 00:06:53,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:53,086 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:06:53,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 16 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:06:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-22 00:06:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-11-22 00:06:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 556 states have (on average 2.1133093525179856) internal successors, (1175), 590 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:06:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1175 transitions. [2022-11-22 00:06:53,121 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1175 transitions. Word has length 4 [2022-11-22 00:06:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:53,122 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1175 transitions. [2022-11-22 00:06:53,122 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) [2022-11-22 00:06:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1175 transitions. [2022-11-22 00:06:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:06:53,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:53,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 00:06:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:06:53,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 00:06:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1740877670, now seen corresponding path program 1 times [2022-11-22 00:06:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:53,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214152558] [2022-11-22 00:06:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:06:53,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:06:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:06:53,194 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:06:53,195 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:06:53,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-22 00:06:53,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-22 00:06:53,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-22 00:06:53,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-22 00:06:53,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-22 00:06:53,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-22 00:06:53,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-22 00:06:53,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-22 00:06:53,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-22 00:06:53,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-22 00:06:53,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-22 00:06:53,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-22 00:06:53,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-22 00:06:53,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-22 00:06:53,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-22 00:06:53,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-22 00:06:53,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-22 00:06:53,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-22 00:06:53,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-22 00:06:53,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-22 00:06:53,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-22 00:06:53,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:06:53,210 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-22 00:06:53,212 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 00:06:53,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 00:06:53,264 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 00:06:53,268 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:06:53,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 303 transitions, 624 flow [2022-11-22 00:06:53,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 303 transitions, 624 flow [2022-11-22 00:06:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-11-22 00:06:53,409 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-11-22 00:06:53,409 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-22 00:06:53,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1960 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-11-22 00:06:53,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-11-22 00:07:04,484 INFO L134 LiptonReduction]: Checked pairs total: 73066 [2022-11-22 00:07:04,485 INFO L136 LiptonReduction]: Total number of compositions: 293 [2022-11-22 00:07:04,486 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 118 transitions, 254 flow [2022-11-22 00:07:05,056 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:05,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:07:05,058 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;@5a1784c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:07:05,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-22 00:07:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 00:07:05,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:05,109 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 00:07:05,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1594, now seen corresponding path program 1 times [2022-11-22 00:07:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:05,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012978554] [2022-11-22 00:07:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:05,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:05,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012978554] [2022-11-22 00:07:05,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012978554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:05,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:05,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 00:07:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71872515] [2022-11-22 00:07:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:05,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:07:05,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:07:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:05,180 INFO L87 Difference]: Start difference. First operand has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:05,610 INFO L93 Difference]: Finished difference Result 14099 states and 41444 transitions. [2022-11-22 00:07:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:07:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-22 00:07:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:05,751 INFO L225 Difference]: With dead ends: 14099 [2022-11-22 00:07:05,751 INFO L226 Difference]: Without dead ends: 14009 [2022-11-22 00:07:05,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:05,752 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:05,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2022-11-22 00:07:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 14009. [2022-11-22 00:07:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14009 states, 13722 states have (on average 3.0017490161783997) internal successors, (41190), 14008 states have internal predecessors, (41190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 41190 transitions. [2022-11-22 00:07:06,343 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 41190 transitions. Word has length 1 [2022-11-22 00:07:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:06,343 INFO L495 AbstractCegarLoop]: Abstraction has 14009 states and 41190 transitions. [2022-11-22 00:07:06,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 41190 transitions. [2022-11-22 00:07:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:07:06,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:06,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:07:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:07:06,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1516068611, now seen corresponding path program 1 times [2022-11-22 00:07:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746302806] [2022-11-22 00:07:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:06,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:06,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746302806] [2022-11-22 00:07:06,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746302806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:06,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:06,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:07:06,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355013870] [2022-11-22 00:07:06,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:06,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:07:06,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:07:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:06,433 INFO L87 Difference]: Start difference. First operand 14009 states and 41190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-22 00:07:06,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:06,721 INFO L93 Difference]: Finished difference Result 13535 states and 39813 transitions. [2022-11-22 00:07:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:07:06,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-22 00:07:06,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:06,975 INFO L225 Difference]: With dead ends: 13535 [2022-11-22 00:07:06,975 INFO L226 Difference]: Without dead ends: 13535 [2022-11-22 00:07:06,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:06,976 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 24 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2022-11-22 00:07:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 13535. [2022-11-22 00:07:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13282 states have (on average 2.9975154344225268) internal successors, (39813), 13534 states have internal predecessors, (39813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 39813 transitions. [2022-11-22 00:07:07,866 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 39813 transitions. Word has length 5 [2022-11-22 00:07:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:07,867 INFO L495 AbstractCegarLoop]: Abstraction has 13535 states and 39813 transitions. [2022-11-22 00:07:07,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-22 00:07:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 39813 transitions. [2022-11-22 00:07:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:07:07,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:07,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:07:07,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:07:07,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1516068685, now seen corresponding path program 1 times [2022-11-22 00:07:07,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:07,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557265366] [2022-11-22 00:07:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:07,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:08,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557265366] [2022-11-22 00:07:08,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557265366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:08,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:08,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:07:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305195563] [2022-11-22 00:07:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:08,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:07:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:07:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:08,034 INFO L87 Difference]: Start difference. First operand 13535 states and 39813 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) [2022-11-22 00:07:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:08,290 INFO L93 Difference]: Finished difference Result 13514 states and 39771 transitions. [2022-11-22 00:07:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:07:08,290 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 [2022-11-22 00:07:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:08,491 INFO L225 Difference]: With dead ends: 13514 [2022-11-22 00:07:08,491 INFO L226 Difference]: Without dead ends: 13514 [2022-11-22 00:07:08,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:08,492 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13514 states. [2022-11-22 00:07:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13514 to 13514. [2022-11-22 00:07:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13514 states, 13266 states have (on average 2.9979647218453187) internal successors, (39771), 13513 states have internal predecessors, (39771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 39771 transitions. [2022-11-22 00:07:08,958 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 39771 transitions. Word has length 5 [2022-11-22 00:07:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:08,958 INFO L495 AbstractCegarLoop]: Abstraction has 13514 states and 39771 transitions. [2022-11-22 00:07:08,958 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) [2022-11-22 00:07:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 39771 transitions. [2022-11-22 00:07:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:07:08,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:08,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:07:08,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -365751202, now seen corresponding path program 1 times [2022-11-22 00:07:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:08,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141168622] [2022-11-22 00:07:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:09,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:09,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141168622] [2022-11-22 00:07:09,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141168622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:09,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:09,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:07:09,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756512569] [2022-11-22 00:07:09,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:09,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:07:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:07:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:07:09,131 INFO L87 Difference]: Start difference. First operand 13514 states and 39771 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:09,477 INFO L93 Difference]: Finished difference Result 15538 states and 44225 transitions. [2022-11-22 00:07:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:07:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-22 00:07:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:09,650 INFO L225 Difference]: With dead ends: 15538 [2022-11-22 00:07:09,650 INFO L226 Difference]: Without dead ends: 15526 [2022-11-22 00:07:09,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:07:09,651 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:09,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 50 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:07:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15526 states. [2022-11-22 00:07:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15526 to 13957. [2022-11-22 00:07:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13957 states, 13729 states have (on average 2.9642362881491735) internal successors, (40696), 13956 states have internal predecessors, (40696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13957 states to 13957 states and 40696 transitions. [2022-11-22 00:07:10,167 INFO L78 Accepts]: Start accepts. Automaton has 13957 states and 40696 transitions. Word has length 8 [2022-11-22 00:07:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:10,168 INFO L495 AbstractCegarLoop]: Abstraction has 13957 states and 40696 transitions. [2022-11-22 00:07:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13957 states and 40696 transitions. [2022-11-22 00:07:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:07:10,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:10,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:07:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:07:10,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash 628226721, now seen corresponding path program 1 times [2022-11-22 00:07:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:10,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101635427] [2022-11-22 00:07:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:10,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:10,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:10,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101635427] [2022-11-22 00:07:10,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101635427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:10,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:10,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:07:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863506423] [2022-11-22 00:07:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:07:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:07:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:10,226 INFO L87 Difference]: Start difference. First operand 13957 states and 40696 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) [2022-11-22 00:07:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:10,413 INFO L93 Difference]: Finished difference Result 13527 states and 39419 transitions. [2022-11-22 00:07:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:07:10,413 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 [2022-11-22 00:07:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:10,475 INFO L225 Difference]: With dead ends: 13527 [2022-11-22 00:07:10,475 INFO L226 Difference]: Without dead ends: 13527 [2022-11-22 00:07:10,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:07:10,476 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:10,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2022-11-22 00:07:10,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 13527. [2022-11-22 00:07:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13527 states, 13320 states have (on average 2.9593843843843843) internal successors, (39419), 13526 states have internal predecessors, (39419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13527 states to 13527 states and 39419 transitions. [2022-11-22 00:07:10,991 INFO L78 Accepts]: Start accepts. Automaton has 13527 states and 39419 transitions. Word has length 9 [2022-11-22 00:07:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:10,992 INFO L495 AbstractCegarLoop]: Abstraction has 13527 states and 39419 transitions. [2022-11-22 00:07:10,992 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) [2022-11-22 00:07:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13527 states and 39419 transitions. [2022-11-22 00:07:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:07:10,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:10,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:07:10,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1983138118, now seen corresponding path program 1 times [2022-11-22 00:07:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:10,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11155836] [2022-11-22 00:07:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:11,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:11,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11155836] [2022-11-22 00:07:11,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11155836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:07:11,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456810171] [2022-11-22 00:07:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:07:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:11,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:07:11,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:07:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:11,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:07:11,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:07:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:11,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:07:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:11,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456810171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:07:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094964479] [2022-11-22 00:07:11,287 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 00:07:11,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:07:11,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 00:07:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757356792] [2022-11-22 00:07:11,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:07:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:07:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:07:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:07:11,292 INFO L87 Difference]: Start difference. First operand 13527 states and 39419 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:11,583 INFO L93 Difference]: Finished difference Result 2237 states and 6122 transitions. [2022-11-22 00:07:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:07:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 00:07:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:11,590 INFO L225 Difference]: With dead ends: 2237 [2022-11-22 00:07:11,590 INFO L226 Difference]: Without dead ends: 2237 [2022-11-22 00:07:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:07:11,591 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 264 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 26 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:07:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-11-22 00:07:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-11-22 00:07:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2216 states have (on average 2.762635379061372) internal successors, (6122), 2236 states have internal predecessors, (6122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 6122 transitions. [2022-11-22 00:07:11,640 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 6122 transitions. Word has length 10 [2022-11-22 00:07:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 6122 transitions. [2022-11-22 00:07:11,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 6122 transitions. [2022-11-22 00:07:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:07:11,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:11,642 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 00:07:11,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:07:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cf71899-b550-4a45-a5c0-f966dfd47839/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:07:11,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 00:07:11,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1864464132, now seen corresponding path program 1 times [2022-11-22 00:07:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:11,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023062891] [2022-11-22 00:07:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:07:11,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:07:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:07:11,884 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:07:11,884 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:07:11,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-22 00:07:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-22 00:07:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-22 00:07:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-22 00:07:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-22 00:07:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-22 00:07:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-22 00:07:11,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-22 00:07:11,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-22 00:07:11,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-22 00:07:11,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-22 00:07:11,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-22 00:07:11,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-22 00:07:11,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-22 00:07:11,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-22 00:07:11,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-22 00:07:11,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-22 00:07:11,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-22 00:07:11,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-22 00:07:11,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-22 00:07:11,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-22 00:07:11,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-22 00:07:11,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-22 00:07:11,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-22 00:07:11,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-22 00:07:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:07:11,890 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:11,890 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 00:07:11,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 00:07:11,918 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 00:07:11,923 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:07:11,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 370 transitions, 770 flow [2022-11-22 00:07:11,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 370 transitions, 770 flow [2022-11-22 00:07:11,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-11-22 00:07:12,052 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-11-22 00:07:12,052 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-22 00:07:12,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3161 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-11-22 00:07:12,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-11-22 00:07:24,496 INFO L134 LiptonReduction]: Checked pairs total: 148112 [2022-11-22 00:07:24,496 INFO L136 LiptonReduction]: Total number of compositions: 358 [2022-11-22 00:07:24,497 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 109 places, 152 transitions, 334 flow [2022-11-22 00:07:35,356 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313680 states, 312095 states have (on average 5.730050144987905) internal successors, (1788320), 313679 states have internal predecessors, (1788320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:35,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:07:35,361 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;@5a1784c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:07:35,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-22 00:07:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 313680 states, 312095 states have (on average 5.730050144987905) internal successors, (1788320), 313679 states have internal predecessors, (1788320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 00:07:35,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:35,824 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 00:07:35,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-22 00:07:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2385, now seen corresponding path program 1 times [2022-11-22 00:07:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:35,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671367813] [2022-11-22 00:07:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:35,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671367813] [2022-11-22 00:07:35,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671367813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:35,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:35,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 00:07:35,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887863541] [2022-11-22 00:07:35,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:35,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:07:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:07:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:36,266 INFO L87 Difference]: Start difference. First operand has 313680 states, 312095 states have (on average 5.730050144987905) internal successors, (1788320), 313679 states have internal predecessors, (1788320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:42,806 INFO L93 Difference]: Finished difference Result 313676 states and 1232046 transitions. [2022-11-22 00:07:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:07:42,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-22 00:07:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:45,820 INFO L225 Difference]: With dead ends: 313676 [2022-11-22 00:07:45,820 INFO L226 Difference]: Without dead ends: 312857 [2022-11-22 00:07:45,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:45,821 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:45,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312857 states. [2022-11-22 00:07:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312857 to 312857. [2022-11-22 00:07:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312857 states, 311284 states have (on average 3.9475045296256797) internal successors, (1228795), 312856 states have internal predecessors, (1228795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312857 states to 312857 states and 1228795 transitions. [2022-11-22 00:08:01,565 INFO L78 Accepts]: Start accepts. Automaton has 312857 states and 1228795 transitions. Word has length 1 [2022-11-22 00:08:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:01,565 INFO L495 AbstractCegarLoop]: Abstraction has 312857 states and 1228795 transitions. [2022-11-22 00:08:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 312857 states and 1228795 transitions. [2022-11-22 00:08:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:08:01,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:01,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:08:01,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:08:01,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-22 00:08:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2016987928, now seen corresponding path program 1 times [2022-11-22 00:08:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579338228] [2022-11-22 00:08:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:01,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:01,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579338228] [2022-11-22 00:08:01,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579338228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:01,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:01,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:01,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172139368] [2022-11-22 00:08:01,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:01,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:01,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:01,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:01,617 INFO L87 Difference]: Start difference. First operand 312857 states and 1228795 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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)