./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI --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 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 --- 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-5e519f3 [2022-11-03 02:07:03,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:07:03,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:07:03,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:07:03,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:07:03,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:07:03,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:07:03,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:07:03,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:07:03,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:07:03,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:07:03,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:07:03,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:07:03,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:07:03,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:07:03,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:07:03,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:07:03,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:07:03,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:07:03,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:07:03,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:07:03,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:07:03,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:07:03,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:07:03,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:07:03,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:07:03,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:07:03,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:07:03,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:07:03,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:07:03,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:07:03,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:07:03,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:07:03,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:07:03,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:07:03,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:07:03,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:07:03,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:07:03,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:07:03,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:07:03,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:07:03,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:07:03,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:07:03,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:07:03,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:07:03,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:07:03,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:07:03,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:07:03,161 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:07:03,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:07:03,161 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:07:03,162 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:07:03,162 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:07:03,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:07:03,162 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:07:03,162 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:07:03,163 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:07:03,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:07:03,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:07:03,163 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:07:03,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:07:03,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:07:03,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:07:03,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:07:03,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:07:03,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:07:03,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:07:03,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:07:03,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:07:03,166 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:07:03,166 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:07:03,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:07:03,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:07:03,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:07:03,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:07:03,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:07:03,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:03,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:07:03,168 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:07:03,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:07:03,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:07:03,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:07:03,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:07:03,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:07:03,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:07:03,170 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_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 [2022-11-03 02:07:03,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:07:03,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:07:03,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:07:03,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:07:03,489 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:07:03,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-11-03 02:07:03,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/data/db92977b7/adeb01c4cec74c89a241b373e212d75a/FLAG1338016f6 [2022-11-03 02:07:04,189 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:07:04,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-11-03 02:07:04,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/data/db92977b7/adeb01c4cec74c89a241b373e212d75a/FLAG1338016f6 [2022-11-03 02:07:04,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/data/db92977b7/adeb01c4cec74c89a241b373e212d75a [2022-11-03 02:07:04,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:07:04,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:07:04,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:04,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:07:04,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:07:04,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:04,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f7f6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04, skipping insertion in model container [2022-11-03 02:07:04,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:04,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:07:04,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:07:04,862 WARN L230 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_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-11-03 02:07:04,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:04,883 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:07:04,915 WARN L230 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_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-11-03 02:07:04,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:04,953 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:07:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04 WrapperNode [2022-11-03 02:07:04,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:04,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:04,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:07:04,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:07:04,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:04,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,028 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-03 02:07:05,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:05,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:07:05,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:07:05,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:07:05,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:07:05,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:07:05,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:07:05,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:07:05,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (1/1) ... [2022-11-03 02:07:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:05,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:05,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:07:05,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:07:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:07:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-03 02:07:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-03 02:07:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:07:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 02:07:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:07:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:07:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:07:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-03 02:07:05,179 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-03 02:07:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:07:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 02:07:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:07:05,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:07:05,181 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:07:05,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:07:05,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:07:05,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:07:05,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:07:05,572 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 02:07:05,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:05 BoogieIcfgContainer [2022-11-03 02:07:05,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:07:05,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:07:05,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:07:05,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:07:05,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:07:04" (1/3) ... [2022-11-03 02:07:05,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc707c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:05, skipping insertion in model container [2022-11-03 02:07:05,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:04" (2/3) ... [2022-11-03 02:07:05,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc707c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:05, skipping insertion in model container [2022-11-03 02:07:05,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:05" (3/3) ... [2022-11-03 02:07:05,584 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.i [2022-11-03 02:07:05,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:07:05,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:07:05,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 02:07:05,605 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:07:05,671 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-03 02:07:05,708 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:07:05,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-03 02:07:05,726 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-03 02:07:05,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-03 02:07:05,833 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-03 02:07:05,834 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-03 02:07:05,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 754 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-03 02:07:05,861 INFO L118 LiptonReduction]: Number of co-enabled transitions 1474 [2022-11-03 02:07:08,758 INFO L133 LiptonReduction]: Checked pairs total: 2139 [2022-11-03 02:07:08,758 INFO L135 LiptonReduction]: Total number of compositions: 92 [2022-11-03 02:07:08,780 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 88 flow [2022-11-03 02:07:08,816 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:08,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:08,858 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;@46a20eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:08,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 02:07:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:07:08,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:08,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:07:08,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 11887295, now seen corresponding path program 1 times [2022-11-03 02:07:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713035643] [2022-11-03 02:07:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:09,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:09,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713035643] [2022-11-03 02:07:09,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713035643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:09,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:09,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:07:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438250330] [2022-11-03 02:07:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:09,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:09,249 INFO L87 Difference]: Start difference. First operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-03 02:07:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:09,345 INFO L93 Difference]: Finished difference Result 75 states and 115 transitions. [2022-11-03 02:07:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:09,347 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 [2022-11-03 02:07:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:09,363 INFO L225 Difference]: With dead ends: 75 [2022-11-03 02:07:09,363 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 02:07:09,364 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 [2022-11-03 02:07:09,368 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:09,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 02:07:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-03 02:07:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.709090909090909) internal successors, (94), 58 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 94 transitions. [2022-11-03 02:07:09,418 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 94 transitions. Word has length 4 [2022-11-03 02:07:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:09,419 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 94 transitions. [2022-11-03 02:07:09,419 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) [2022-11-03 02:07:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 94 transitions. [2022-11-03 02:07:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:07:09,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:09,420 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 02:07:09,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:09,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1461194085, now seen corresponding path program 1 times [2022-11-03 02:07:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:09,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661272440] [2022-11-03 02:07:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:09,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:09,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:09,501 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:09,501 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:09,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-03 02:07:09,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 02:07:09,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 02:07:09,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 02:07:09,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-03 02:07:09,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-03 02:07:09,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 02:07:09,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 02:07:09,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 02:07:09,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-03 02:07:09,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:09,510 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:07:09,512 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:07:09,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 02:07:09,536 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-03 02:07:09,539 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:07:09,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-03 02:07:09,539 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-03 02:07:09,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-03 02:07:09,745 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-03 02:07:09,746 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-03 02:07:09,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4139 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-03 02:07:09,765 INFO L118 LiptonReduction]: Number of co-enabled transitions 3472 [2022-11-03 02:07:12,305 INFO L133 LiptonReduction]: Checked pairs total: 5364 [2022-11-03 02:07:12,306 INFO L135 LiptonReduction]: Total number of compositions: 103 [2022-11-03 02:07:12,307 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 43 transitions, 134 flow [2022-11-03 02:07:12,410 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:12,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:12,422 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;@46a20eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:12,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 02:07:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:07:12,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:12,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:07:12,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash 600708997, now seen corresponding path program 1 times [2022-11-03 02:07:12,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261459526] [2022-11-03 02:07:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:12,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:12,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261459526] [2022-11-03 02:07:12,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261459526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:12,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:12,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:07:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972626310] [2022-11-03 02:07:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:12,502 INFO L87 Difference]: Start difference. First operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:12,617 INFO L93 Difference]: Finished difference Result 1043 states and 2409 transitions. [2022-11-03 02:07:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:12,618 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 [2022-11-03 02:07:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:12,629 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 02:07:12,636 INFO L226 Difference]: Without dead ends: 987 [2022-11-03 02:07:12,637 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 [2022-11-03 02:07:12,638 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:12,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-03 02:07:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2022-11-03 02:07:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 946 states have (on average 2.4450317124735728) internal successors, (2313), 986 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2313 transitions. [2022-11-03 02:07:12,737 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2313 transitions. Word has length 5 [2022-11-03 02:07:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:12,738 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 2313 transitions. [2022-11-03 02:07:12,738 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) [2022-11-03 02:07:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2313 transitions. [2022-11-03 02:07:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:12,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:12,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:07:12,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -645441704, now seen corresponding path program 1 times [2022-11-03 02:07:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:12,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488208028] [2022-11-03 02:07:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:12,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488208028] [2022-11-03 02:07:12,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488208028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:12,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:12,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:07:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396658147] [2022-11-03 02:07:12,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:12,856 INFO L87 Difference]: Start difference. First operand 987 states and 2313 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) [2022-11-03 02:07:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:12,935 INFO L93 Difference]: Finished difference Result 917 states and 2163 transitions. [2022-11-03 02:07:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:12,936 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 [2022-11-03 02:07:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:12,941 INFO L225 Difference]: With dead ends: 917 [2022-11-03 02:07:12,941 INFO L226 Difference]: Without dead ends: 917 [2022-11-03 02:07:12,942 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 [2022-11-03 02:07:12,942 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:12,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-03 02:07:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 917. [2022-11-03 02:07:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 2.416759776536313) internal successors, (2163), 916 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2163 transitions. [2022-11-03 02:07:12,973 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2163 transitions. Word has length 9 [2022-11-03 02:07:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:12,974 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 2163 transitions. [2022-11-03 02:07:12,974 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) [2022-11-03 02:07:12,974 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2163 transitions. [2022-11-03 02:07:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:12,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:12,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:07:12,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -645441703, now seen corresponding path program 1 times [2022-11-03 02:07:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028991278] [2022-11-03 02:07:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:12,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:07:13,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:13,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028991278] [2022-11-03 02:07:13,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028991278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:13,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:13,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:07:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154402065] [2022-11-03 02:07:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:13,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:13,020 INFO L87 Difference]: Start difference. First operand 917 states and 2163 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) [2022-11-03 02:07:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:13,086 INFO L93 Difference]: Finished difference Result 847 states and 2013 transitions. [2022-11-03 02:07:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:13,087 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 [2022-11-03 02:07:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:13,088 INFO L225 Difference]: With dead ends: 847 [2022-11-03 02:07:13,088 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 02:07:13,089 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 [2022-11-03 02:07:13,090 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 02:07:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-03 02:07:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 208 states have (on average 2.4375) internal successors, (507), 210 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 507 transitions. [2022-11-03 02:07:13,098 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 507 transitions. Word has length 9 [2022-11-03 02:07:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:13,098 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 507 transitions. [2022-11-03 02:07:13,099 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) [2022-11-03 02:07:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 507 transitions. [2022-11-03 02:07:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:07:13,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:13,100 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-03 02:07:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:07:13,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1794164395, now seen corresponding path program 1 times [2022-11-03 02:07:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:13,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721877825] [2022-11-03 02:07:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:13,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:13,154 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:13,155 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:13,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-03 02:07:13,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 02:07:13,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 02:07:13,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 02:07:13,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-03 02:07:13,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-03 02:07:13,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 02:07:13,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 02:07:13,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 02:07:13,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-03 02:07:13,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:07:13,158 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-03 02:07:13,158 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:07:13,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 02:07:13,180 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-03 02:07:13,183 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:07:13,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-03 02:07:13,184 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-03 02:07:13,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-03 02:07:13,609 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-03 02:07:13,609 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-03 02:07:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19959 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-03 02:07:13,665 INFO L118 LiptonReduction]: Number of co-enabled transitions 5994 [2022-11-03 02:07:16,491 INFO L133 LiptonReduction]: Checked pairs total: 9943 [2022-11-03 02:07:16,491 INFO L135 LiptonReduction]: Total number of compositions: 114 [2022-11-03 02:07:16,492 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 51 transitions, 180 flow [2022-11-03 02:07:16,977 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:16,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:16,979 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;@46a20eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:16,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 02:07:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:07:17,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:17,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:07:17,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 859666886, now seen corresponding path program 1 times [2022-11-03 02:07:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:17,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853982263] [2022-11-03 02:07:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:17,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:17,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853982263] [2022-11-03 02:07:17,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853982263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:17,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:17,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:07:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257223631] [2022-11-03 02:07:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:17,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:17,099 INFO L87 Difference]: Start difference. First operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:17,424 INFO L93 Difference]: Finished difference Result 10471 states and 32365 transitions. [2022-11-03 02:07:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:17,426 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 [2022-11-03 02:07:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:17,492 INFO L225 Difference]: With dead ends: 10471 [2022-11-03 02:07:17,492 INFO L226 Difference]: Without dead ends: 9967 [2022-11-03 02:07:17,492 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 [2022-11-03 02:07:17,493 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:17,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:07:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-11-03 02:07:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 9967. [2022-11-03 02:07:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9967 states, 9749 states have (on average 3.185660067699251) internal successors, (31057), 9966 states have internal predecessors, (31057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9967 states to 9967 states and 31057 transitions. [2022-11-03 02:07:17,988 INFO L78 Accepts]: Start accepts. Automaton has 9967 states and 31057 transitions. Word has length 5 [2022-11-03 02:07:17,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:17,988 INFO L495 AbstractCegarLoop]: Abstraction has 9967 states and 31057 transitions. [2022-11-03 02:07:17,989 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) [2022-11-03 02:07:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9967 states and 31057 transitions. [2022-11-03 02:07:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:17,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:17,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:07:17,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 57649627, now seen corresponding path program 1 times [2022-11-03 02:07:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:18,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322852847] [2022-11-03 02:07:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:07:18,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:18,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322852847] [2022-11-03 02:07:18,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322852847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:18,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:18,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:07:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606630671] [2022-11-03 02:07:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:18,125 INFO L87 Difference]: Start difference. First operand 9967 states and 31057 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) [2022-11-03 02:07:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:18,379 INFO L93 Difference]: Finished difference Result 9081 states and 28635 transitions. [2022-11-03 02:07:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:18,380 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 [2022-11-03 02:07:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:18,473 INFO L225 Difference]: With dead ends: 9081 [2022-11-03 02:07:18,473 INFO L226 Difference]: Without dead ends: 9081 [2022-11-03 02:07:18,473 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 [2022-11-03 02:07:18,474 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:18,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2022-11-03 02:07:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9081. [2022-11-03 02:07:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9081 states, 8970 states have (on average 3.1923076923076925) internal successors, (28635), 9080 states have internal predecessors, (28635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 28635 transitions. [2022-11-03 02:07:19,018 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 28635 transitions. Word has length 9 [2022-11-03 02:07:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:19,018 INFO L495 AbstractCegarLoop]: Abstraction has 9081 states and 28635 transitions. [2022-11-03 02:07:19,018 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) [2022-11-03 02:07:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 28635 transitions. [2022-11-03 02:07:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:19,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:19,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:19,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:07:19,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash 57649628, now seen corresponding path program 1 times [2022-11-03 02:07:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:19,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536325000] [2022-11-03 02:07:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:19,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:19,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536325000] [2022-11-03 02:07:19,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536325000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964036966] [2022-11-03 02:07:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:19,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:19,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:07:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:19,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:07:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:19,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:19,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964036966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:19,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:07:19,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 02:07:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515989083] [2022-11-03 02:07:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:19,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:07:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:07:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:19,258 INFO L87 Difference]: Start difference. First operand 9081 states and 28635 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2022-11-03 02:07:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:19,415 INFO L93 Difference]: Finished difference Result 733 states and 1724 transitions. [2022-11-03 02:07:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:07:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2022-11-03 02:07:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:19,417 INFO L225 Difference]: With dead ends: 733 [2022-11-03 02:07:19,417 INFO L226 Difference]: Without dead ends: 67 [2022-11-03 02:07:19,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:19,418 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:19,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 11 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-03 02:07:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-03 02:07:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 139 transitions. [2022-11-03 02:07:19,439 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 139 transitions. Word has length 9 [2022-11-03 02:07:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:19,440 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 139 transitions. [2022-11-03 02:07:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2022-11-03 02:07:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 139 transitions. [2022-11-03 02:07:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:07:19,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:19,441 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-03 02:07:19,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:07:19,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:19,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash -890471870, now seen corresponding path program 1 times [2022-11-03 02:07:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:19,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025609134] [2022-11-03 02:07:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:19,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:19,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:19,708 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:19,708 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:19,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-03 02:07:19,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 02:07:19,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 02:07:19,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 02:07:19,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-03 02:07:19,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-03 02:07:19,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 02:07:19,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 02:07:19,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 02:07:19,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-03 02:07:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:07:19,712 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-03 02:07:19,712 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:07:19,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-03 02:07:19,752 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-03 02:07:19,755 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:07:19,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-03 02:07:19,756 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-03 02:07:19,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-03 02:07:21,824 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-03 02:07:21,825 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-03 02:07:21,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 101422 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-03 02:07:22,271 INFO L118 LiptonReduction]: Number of co-enabled transitions 9040 [2022-11-03 02:07:25,510 INFO L133 LiptonReduction]: Checked pairs total: 15630 [2022-11-03 02:07:25,510 INFO L135 LiptonReduction]: Total number of compositions: 127 [2022-11-03 02:07:25,511 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 59 transitions, 230 flow [2022-11-03 02:07:28,975 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:28,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:28,977 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;@46a20eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:28,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-03 02:07:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:07:29,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:29,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:07:29,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1149397897, now seen corresponding path program 1 times [2022-11-03 02:07:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:29,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408106427] [2022-11-03 02:07:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:29,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:29,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408106427] [2022-11-03 02:07:29,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408106427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:29,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:29,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:07:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776842704] [2022-11-03 02:07:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:29,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:29,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:29,314 INFO L87 Difference]: Start difference. First operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:30,930 INFO L93 Difference]: Finished difference Result 100007 states and 390177 transitions. [2022-11-03 02:07:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:30,930 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 [2022-11-03 02:07:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:31,840 INFO L225 Difference]: With dead ends: 100007 [2022-11-03 02:07:31,840 INFO L226 Difference]: Without dead ends: 94687 [2022-11-03 02:07:31,840 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 [2022-11-03 02:07:31,842 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:31,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94687 states. [2022-11-03 02:07:35,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94687 to 94687. [2022-11-03 02:07:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94687 states, 93720 states have (on average 3.9686833119931713) internal successors, (371945), 94686 states have internal predecessors, (371945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94687 states to 94687 states and 371945 transitions. [2022-11-03 02:07:36,944 INFO L78 Accepts]: Start accepts. Automaton has 94687 states and 371945 transitions. Word has length 5 [2022-11-03 02:07:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:36,944 INFO L495 AbstractCegarLoop]: Abstraction has 94687 states and 371945 transitions. [2022-11-03 02:07:36,944 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) [2022-11-03 02:07:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 94687 states and 371945 transitions. [2022-11-03 02:07:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:36,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:36,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:36,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:07:36,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash 578531128, now seen corresponding path program 1 times [2022-11-03 02:07:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:36,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33805397] [2022-11-03 02:07:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:37,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33805397] [2022-11-03 02:07:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33805397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191311814] [2022-11-03 02:07:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:37,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:37,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:37,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:37,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:07:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:37,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:07:37,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:37,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:37,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191311814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:37,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:07:37,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 02:07:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385770217] [2022-11-03 02:07:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:37,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:07:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:07:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:37,277 INFO L87 Difference]: Start difference. First operand 94687 states and 371945 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2022-11-03 02:07:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:37,374 INFO L93 Difference]: Finished difference Result 2386 states and 6510 transitions. [2022-11-03 02:07:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:07:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2022-11-03 02:07:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:37,380 INFO L225 Difference]: With dead ends: 2386 [2022-11-03 02:07:37,381 INFO L226 Difference]: Without dead ends: 1596 [2022-11-03 02:07:37,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:37,383 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:37,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 11 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-11-03 02:07:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-11-03 02:07:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1566 states have (on average 2.8065134099616857) internal successors, (4395), 1595 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 4395 transitions. [2022-11-03 02:07:37,418 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 4395 transitions. Word has length 9 [2022-11-03 02:07:37,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:37,418 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 4395 transitions. [2022-11-03 02:07:37,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2022-11-03 02:07:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 4395 transitions. [2022-11-03 02:07:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:07:37,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:37,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:07:37,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_831ec1a7-f1ed-4cb0-b86b-e1523fb7b9fb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:07:37,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 578531129, now seen corresponding path program 1 times [2022-11-03 02:07:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527290891] [2022-11-03 02:07:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:07:37,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527290891] [2022-11-03 02:07:37,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527290891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:37,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:37,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:07:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882681487] [2022-11-03 02:07:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:37,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:37,685 INFO L87 Difference]: Start difference. First operand 1596 states and 4395 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) [2022-11-03 02:07:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:37,728 INFO L93 Difference]: Finished difference Result 1437 states and 4023 transitions. [2022-11-03 02:07:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:37,728 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 [2022-11-03 02:07:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:37,729 INFO L225 Difference]: With dead ends: 1437 [2022-11-03 02:07:37,729 INFO L226 Difference]: Without dead ends: 139 [2022-11-03 02:07:37,730 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 [2022-11-03 02:07:37,731 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:37,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-03 02:07:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-03 02:07:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.5434782608695654) internal successors, (351), 138 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 351 transitions. [2022-11-03 02:07:37,737 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 351 transitions. Word has length 9 [2022-11-03 02:07:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:37,737 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 351 transitions. [2022-11-03 02:07:37,738 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) [2022-11-03 02:07:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 351 transitions. [2022-11-03 02:07:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:07:37,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:37,743 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:37,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:07:37,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-03 02:07:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1319341737, now seen corresponding path program 1 times [2022-11-03 02:07:37,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:37,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431789530] [2022-11-03 02:07:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:37,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:37,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:07:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:07:37,788 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:07:37,790 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:07:37,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-03 02:07:37,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-03 02:07:37,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-03 02:07:37,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-03 02:07:37,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-03 02:07:37,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-03 02:07:37,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-03 02:07:37,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-03 02:07:37,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-03 02:07:37,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-03 02:07:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:07:37,794 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-03 02:07:37,794 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:07:37,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-03 02:07:37,836 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-03 02:07:37,838 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:07:37,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-03 02:07:37,839 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-03 02:07:37,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-03 02:07:45,225 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-03 02:07:45,225 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-03 02:07:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 513176 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-03 02:07:46,239 INFO L118 LiptonReduction]: Number of co-enabled transitions 12610 [2022-11-03 02:07:49,537 INFO L133 LiptonReduction]: Checked pairs total: 22559 [2022-11-03 02:07:49,537 INFO L135 LiptonReduction]: Total number of compositions: 142 [2022-11-03 02:07:49,538 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 67 transitions, 284 flow