./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh --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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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-2329fc7 [2022-12-14 12:43:27,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:43:27,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:43:27,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:43:27,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:43:27,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:43:27,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:43:27,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:43:27,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:43:27,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:43:27,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:43:27,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:43:27,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:43:27,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:43:27,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:43:27,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:43:27,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:43:27,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:43:27,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:43:27,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:43:27,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:43:27,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:43:27,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:43:27,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:43:27,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:43:27,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:43:27,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:43:27,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:43:27,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:43:27,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:43:27,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:43:27,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:43:27,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:43:27,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:43:27,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:43:27,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:43:27,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:43:27,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:43:27,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:43:27,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:43:27,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:43:27,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 12:43:27,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:43:27,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:43:27,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:43:27,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:43:27,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:43:27,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:43:27,403 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:43:27,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:43:27,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:43:27,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:43:27,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:43:27,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:43:27,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:43:27,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:43:27,405 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:43:27,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:43:27,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:43:27,405 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:43:27,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:43:27,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:43:27,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:43:27,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:43:27,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:43:27,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:43:27,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:43:27,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:43:27,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:43:27,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:43:27,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:43:27,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:43:27,410 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_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-12-14 12:43:27,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:43:27,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:43:27,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:43:27,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:43:27,623 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:43:27,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-12-14 12:43:30,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:43:30,416 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:43:30,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-12-14 12:43:30,428 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/data/e11524cd1/2ffce9e8a7b24a3dabd94fa86437a18b/FLAG1c079947a [2022-12-14 12:43:30,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/data/e11524cd1/2ffce9e8a7b24a3dabd94fa86437a18b [2022-12-14 12:43:30,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:43:30,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:43:30,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:43:30,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:43:30,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:43:30,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:43:30" (1/1) ... [2022-12-14 12:43:30,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669470d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:30, skipping insertion in model container [2022-12-14 12:43:30,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:43:30" (1/1) ... [2022-12-14 12:43:30,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:43:30,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:43:31,077 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-12-14 12:43:31,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:43:31,108 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:43:31,141 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-12-14 12:43:31,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:43:31,182 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:43:31,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31 WrapperNode [2022-12-14 12:43:31,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:43:31,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:43:31,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:43:31,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:43:31,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,222 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-12-14 12:43:31,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:43:31,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:43:31,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:43:31,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:43:31,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,243 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:43:31,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:43:31,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:43:31,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:43:31,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (1/1) ... [2022-12-14 12:43:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:43:31,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:31,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:43:31,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:43:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:43:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 12:43:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:43:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:43:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:43:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:43:31,310 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:43:31,406 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:43:31,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:43:31,586 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:43:31,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:43:31,591 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 12:43:31,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:43:31 BoogieIcfgContainer [2022-12-14 12:43:31,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:43:31,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:43:31,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:43:31,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:43:31,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:43:30" (1/3) ... [2022-12-14 12:43:31,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c09276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:43:31, skipping insertion in model container [2022-12-14 12:43:31,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:43:31" (2/3) ... [2022-12-14 12:43:31,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c09276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:43:31, skipping insertion in model container [2022-12-14 12:43:31,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:43:31" (3/3) ... [2022-12-14 12:43:31,602 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-12-14 12:43:31,610 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 12:43:31,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:43:31,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 12:43:31,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:43:31,672 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 12:43:31,694 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:43:31,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 127 transitions, 262 flow [2022-12-14 12:43:31,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 127 transitions, 262 flow [2022-12-14 12:43:31,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2022-12-14 12:43:31,779 INFO L130 PetriNetUnfolder]: 17/162 cut-off events. [2022-12-14 12:43:31,779 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 12:43:31,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 162 events. 17/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 366 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-12-14 12:43:31,788 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2022-12-14 12:43:34,424 INFO L134 LiptonReduction]: Checked pairs total: 5026 [2022-12-14 12:43:34,424 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-12-14 12:43:34,430 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 39 transitions, 86 flow [2022-12-14 12:43:34,448 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 194 states, 167 states have (on average 2.7425149700598803) internal successors, (458), 193 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:43:34,464 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;@3eac080e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:43:34,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-14 12:43:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 167 states have (on average 2.7425149700598803) internal successors, (458), 193 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:43:34,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:34,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:43:34,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 12:43:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash 15292880, now seen corresponding path program 1 times [2022-12-14 12:43:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217529435] [2022-12-14 12:43:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:34,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217529435] [2022-12-14 12:43:34,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217529435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010645057] [2022-12-14 12:43:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:34,667 INFO L87 Difference]: Start difference. First operand has 194 states, 167 states have (on average 2.7425149700598803) internal successors, (458), 193 states have internal predecessors, (458), 0 states have call successors, (0), 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) [2022-12-14 12:43:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:34,742 INFO L93 Difference]: Finished difference Result 162 states and 291 transitions. [2022-12-14 12:43:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:34,744 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 [2022-12-14 12:43:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:34,751 INFO L225 Difference]: With dead ends: 162 [2022-12-14 12:43:34,752 INFO L226 Difference]: Without dead ends: 156 [2022-12-14 12:43:34,752 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 [2022-12-14 12:43:34,754 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:34,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-12-14 12:43:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-12-14 12:43:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 1.9929078014184398) internal successors, (281), 155 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 281 transitions. [2022-12-14 12:43:34,786 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 281 transitions. Word has length 4 [2022-12-14 12:43:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:34,786 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 281 transitions. [2022-12-14 12:43:34,787 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) [2022-12-14 12:43:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 281 transitions. [2022-12-14 12:43:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:43:34,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:34,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:43:34,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:43:34,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 12:43:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1811568733, now seen corresponding path program 1 times [2022-12-14 12:43:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:34,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008231355] [2022-12-14 12:43:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:34,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:34,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008231355] [2022-12-14 12:43:34,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008231355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:34,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:34,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:34,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175034009] [2022-12-14 12:43:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:34,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:34,860 INFO L87 Difference]: Start difference. First operand 156 states and 281 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:34,917 INFO L93 Difference]: Finished difference Result 173 states and 291 transitions. [2022-12-14 12:43:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:43:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:34,919 INFO L225 Difference]: With dead ends: 173 [2022-12-14 12:43:34,919 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 12:43:34,920 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 [2022-12-14 12:43:34,921 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:34,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:43:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 12:43:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2022-12-14 12:43:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 133 states have (on average 1.9022556390977443) internal successors, (253), 141 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 253 transitions. [2022-12-14 12:43:34,934 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 253 transitions. Word has length 6 [2022-12-14 12:43:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:34,934 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 253 transitions. [2022-12-14 12:43:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 253 transitions. [2022-12-14 12:43:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:43:34,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:34,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 12:43:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:43:34,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-14 12:43:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1811604153, now seen corresponding path program 1 times [2022-12-14 12:43:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:34,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812345325] [2022-12-14 12:43:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:43:34,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:43:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:43:34,974 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:43:34,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:43:34,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-14 12:43:34,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-14 12:43:34,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-14 12:43:34,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-14 12:43:34,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-14 12:43:34,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-14 12:43:34,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-14 12:43:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:43:34,980 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 12:43:34,981 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:43:34,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 12:43:34,998 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 12:43:35,001 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:43:35,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2022-12-14 12:43:35,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2022-12-14 12:43:35,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-12-14 12:43:35,033 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-12-14 12:43:35,033 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 12:43:35,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-12-14 12:43:35,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-12-14 12:43:37,844 INFO L134 LiptonReduction]: Checked pairs total: 23036 [2022-12-14 12:43:37,844 INFO L136 LiptonReduction]: Total number of compositions: 149 [2022-12-14 12:43:37,845 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 66 transitions, 150 flow [2022-12-14 12:43:37,929 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:37,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:43:37,930 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;@3eac080e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:43:37,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 12:43:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:43:37,937 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:37,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:43:37,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 12:43:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash 809366116, now seen corresponding path program 1 times [2022-12-14 12:43:37,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:37,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049856607] [2022-12-14 12:43:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:37,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:37,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049856607] [2022-12-14 12:43:37,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049856607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:37,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:37,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:37,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851860039] [2022-12-14 12:43:37,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:37,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:37,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:37,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:37,979 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 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) [2022-12-14 12:43:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:38,092 INFO L93 Difference]: Finished difference Result 3945 states and 10756 transitions. [2022-12-14 12:43:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:38,093 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 [2022-12-14 12:43:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:38,111 INFO L225 Difference]: With dead ends: 3945 [2022-12-14 12:43:38,111 INFO L226 Difference]: Without dead ends: 3919 [2022-12-14 12:43:38,112 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 [2022-12-14 12:43:38,112 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:38,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-12-14 12:43:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-12-14 12:43:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.8385554965480617) internal successors, (10690), 3918 states have internal predecessors, (10690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10690 transitions. [2022-12-14 12:43:38,239 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10690 transitions. Word has length 5 [2022-12-14 12:43:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:38,240 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10690 transitions. [2022-12-14 12:43:38,240 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) [2022-12-14 12:43:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10690 transitions. [2022-12-14 12:43:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:43:38,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:38,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:43:38,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 12:43:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 418507188, now seen corresponding path program 1 times [2022-12-14 12:43:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365340886] [2022-12-14 12:43:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:38,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:38,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365340886] [2022-12-14 12:43:38,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365340886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:38,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:38,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093334563] [2022-12-14 12:43:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:38,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:38,289 INFO L87 Difference]: Start difference. First operand 3919 states and 10690 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:38,413 INFO L93 Difference]: Finished difference Result 4824 states and 12259 transitions. [2022-12-14 12:43:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 12:43:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:38,455 INFO L225 Difference]: With dead ends: 4824 [2022-12-14 12:43:38,456 INFO L226 Difference]: Without dead ends: 4800 [2022-12-14 12:43:38,456 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 [2022-12-14 12:43:38,457 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:38,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2022-12-14 12:43:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4322. [2022-12-14 12:43:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4189 states have (on average 2.730484602530437) internal successors, (11438), 4321 states have internal predecessors, (11438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11438 transitions. [2022-12-14 12:43:38,596 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11438 transitions. Word has length 7 [2022-12-14 12:43:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:38,596 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 11438 transitions. [2022-12-14 12:43:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11438 transitions. [2022-12-14 12:43:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:43:38,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:38,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:43:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:43:38,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 12:43:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash 605157836, now seen corresponding path program 1 times [2022-12-14 12:43:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:38,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379600633] [2022-12-14 12:43:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:43:38,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:38,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379600633] [2022-12-14 12:43:38,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379600633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:38,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:38,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:43:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065387917] [2022-12-14 12:43:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:38,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:38,636 INFO L87 Difference]: Start difference. First operand 4322 states and 11438 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) [2022-12-14 12:43:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:38,741 INFO L93 Difference]: Finished difference Result 4090 states and 10774 transitions. [2022-12-14 12:43:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:38,741 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 [2022-12-14 12:43:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:38,758 INFO L225 Difference]: With dead ends: 4090 [2022-12-14 12:43:38,758 INFO L226 Difference]: Without dead ends: 4090 [2022-12-14 12:43:38,759 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 [2022-12-14 12:43:38,759 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-12-14 12:43:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4090. [2022-12-14 12:43:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 3978 states have (on average 2.7083961789844144) internal successors, (10774), 4089 states have internal predecessors, (10774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 10774 transitions. [2022-12-14 12:43:38,843 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 10774 transitions. Word has length 9 [2022-12-14 12:43:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:38,844 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 10774 transitions. [2022-12-14 12:43:38,844 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) [2022-12-14 12:43:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 10774 transitions. [2022-12-14 12:43:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:43:38,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:38,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:43:38,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:43:38,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 12:43:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash 605157811, now seen corresponding path program 1 times [2022-12-14 12:43:38,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:38,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125408509] [2022-12-14 12:43:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:38,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:38,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:38,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125408509] [2022-12-14 12:43:38,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125408509] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:43:38,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648463960] [2022-12-14 12:43:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:38,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:38,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:43:38,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:43:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:38,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:38,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:38,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:38,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648463960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:38,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:43:38,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-14 12:43:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382264595] [2022-12-14 12:43:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:43:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:43:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:43:38,987 INFO L87 Difference]: Start difference. First operand 4090 states and 10774 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) [2022-12-14 12:43:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:39,074 INFO L93 Difference]: Finished difference Result 3858 states and 10110 transitions. [2022-12-14 12:43:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:43:39,075 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 [2022-12-14 12:43:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:39,095 INFO L225 Difference]: With dead ends: 3858 [2022-12-14 12:43:39,095 INFO L226 Difference]: Without dead ends: 3858 [2022-12-14 12:43:39,095 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 [2022-12-14 12:43:39,095 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:39,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 13 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:43:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-12-14 12:43:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2022-12-14 12:43:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3767 states have (on average 2.683833289089461) internal successors, (10110), 3857 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 10110 transitions. [2022-12-14 12:43:39,187 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 10110 transitions. Word has length 9 [2022-12-14 12:43:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:39,188 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 10110 transitions. [2022-12-14 12:43:39,188 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) [2022-12-14 12:43:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 10110 transitions. [2022-12-14 12:43:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:43:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:39,199 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 12:43:39,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:43:39,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e999eae-afa8-4b59-ae9d-240d719610b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:39,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-14 12:43:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1736140960, now seen corresponding path program 1 times [2022-12-14 12:43:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184559459] [2022-12-14 12:43:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:39,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:43:39,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:43:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:43:39,437 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:43:39,437 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:43:39,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-14 12:43:39,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-14 12:43:39,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-14 12:43:39,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-14 12:43:39,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-14 12:43:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:43:39,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-14 12:43:39,440 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:43:39,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 12:43:39,459 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 12:43:39,462 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:43:39,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 203 transitions, 436 flow [2022-12-14 12:43:39,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 203 transitions, 436 flow [2022-12-14 12:43:39,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-12-14 12:43:39,511 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-12-14 12:43:39,511 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 12:43:39,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1396 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-12-14 12:43:39,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 19872 [2022-12-14 12:43:42,508 INFO L134 LiptonReduction]: Checked pairs total: 53694 [2022-12-14 12:43:42,508 INFO L136 LiptonReduction]: Total number of compositions: 179 [2022-12-14 12:43:42,509 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 89 transitions, 208 flow [2022-12-14 12:43:43,904 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.905432502467917) internal successors, (318029), 65788 states have internal predecessors, (318029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:43,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:43:43,906 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;@3eac080e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:43:43,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-14 12:43:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.905432502467917) internal successors, (318029), 65788 states have internal predecessors, (318029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:43:44,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:44,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:43:44,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:43:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1210498843, now seen corresponding path program 1 times [2022-12-14 12:43:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:44,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879854030] [2022-12-14 12:43:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:44,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:44,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879854030] [2022-12-14 12:43:44,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879854030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:44,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:44,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421800193] [2022-12-14 12:43:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:44,111 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.905432502467917) internal successors, (318029), 65788 states have internal predecessors, (318029), 0 states have call successors, (0), 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) [2022-12-14 12:43:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:44,882 INFO L93 Difference]: Finished difference Result 65753 states and 238574 transitions. [2022-12-14 12:43:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:44,883 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 [2022-12-14 12:43:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:45,291 INFO L225 Difference]: With dead ends: 65753 [2022-12-14 12:43:45,291 INFO L226 Difference]: Without dead ends: 65627 [2022-12-14 12:43:45,291 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 [2022-12-14 12:43:45,292 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:45,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:43:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-12-14 12:43:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-12-14 12:43:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.681486519910957) internal successors, (238148), 65626 states have internal predecessors, (238148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 238148 transitions. [2022-12-14 12:43:47,185 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 238148 transitions. Word has length 5 [2022-12-14 12:43:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:47,186 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 238148 transitions. [2022-12-14 12:43:47,186 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) [2022-12-14 12:43:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 238148 transitions. [2022-12-14 12:43:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:43:47,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:47,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:43:47,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:43:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -638066414, now seen corresponding path program 1 times [2022-12-14 12:43:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827579552] [2022-12-14 12:43:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:47,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827579552] [2022-12-14 12:43:47,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827579552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:47,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:47,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:43:47,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330202581] [2022-12-14 12:43:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:47,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:47,267 INFO L87 Difference]: Start difference. First operand 65627 states and 238148 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:48,038 INFO L93 Difference]: Finished difference Result 87108 states and 292930 transitions. [2022-12-14 12:43:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 12:43:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:48,445 INFO L225 Difference]: With dead ends: 87108 [2022-12-14 12:43:48,445 INFO L226 Difference]: Without dead ends: 86964 [2022-12-14 12:43:48,446 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 [2022-12-14 12:43:48,446 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 20 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86964 states. [2022-12-14 12:43:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86964 to 81528. [2022-12-14 12:43:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81528 states, 80637 states have (on average 3.491560945967732) internal successors, (281549), 81527 states have internal predecessors, (281549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81528 states to 81528 states and 281549 transitions. [2022-12-14 12:43:50,756 INFO L78 Accepts]: Start accepts. Automaton has 81528 states and 281549 transitions. Word has length 7 [2022-12-14 12:43:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:50,756 INFO L495 AbstractCegarLoop]: Abstraction has 81528 states and 281549 transitions. [2022-12-14 12:43:50,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 81528 states and 281549 transitions. [2022-12-14 12:43:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:43:50,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:50,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:43:50,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 12:43:50,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:43:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1306019227, now seen corresponding path program 1 times [2022-12-14 12:43:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930240019] [2022-12-14 12:43:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:43:50,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:50,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930240019] [2022-12-14 12:43:50,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930240019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:50,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:50,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:43:50,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408970304] [2022-12-14 12:43:50,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:50,789 INFO L87 Difference]: Start difference. First operand 81528 states and 281549 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) [2022-12-14 12:43:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:51,552 INFO L93 Difference]: Finished difference Result 77418 states and 266141 transitions. [2022-12-14 12:43:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:51,552 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 [2022-12-14 12:43:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:51,821 INFO L225 Difference]: With dead ends: 77418 [2022-12-14 12:43:51,821 INFO L226 Difference]: Without dead ends: 77418 [2022-12-14 12:43:51,821 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 [2022-12-14 12:43:51,822 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:51,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77418 states. [2022-12-14 12:43:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77418 to 77418. [2022-12-14 12:43:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77418 states, 76665 states have (on average 3.4714798147785824) internal successors, (266141), 77417 states have internal predecessors, (266141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77418 states to 77418 states and 266141 transitions. [2022-12-14 12:43:53,592 INFO L78 Accepts]: Start accepts. Automaton has 77418 states and 266141 transitions. Word has length 9 [2022-12-14 12:43:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 77418 states and 266141 transitions. [2022-12-14 12:43:53,593 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) [2022-12-14 12:43:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 77418 states and 266141 transitions. [2022-12-14 12:43:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:43:53,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:53,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:43:53,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 12:43:53,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:43:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1306019192, now seen corresponding path program 1 times [2022-12-14 12:43:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283400958] [2022-12-14 12:43:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:53,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283400958] [2022-12-14 12:43:53,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283400958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:53,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:53,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:43:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150957082] [2022-12-14 12:43:53,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:43:53,628 INFO L87 Difference]: Start difference. First operand 77418 states and 266141 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) [2022-12-14 12:43:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:54,351 INFO L93 Difference]: Finished difference Result 73308 states and 250733 transitions. [2022-12-14 12:43:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:54,352 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 [2022-12-14 12:43:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:54,673 INFO L225 Difference]: With dead ends: 73308 [2022-12-14 12:43:54,673 INFO L226 Difference]: Without dead ends: 73308 [2022-12-14 12:43:54,674 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 [2022-12-14 12:43:54,674 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:54,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 9 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:43:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73308 states. [2022-12-14 12:43:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73308 to 73308. [2022-12-14 12:43:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73308 states, 72693 states have (on average 3.449204187473347) internal successors, (250733), 73307 states have internal predecessors, (250733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73308 states to 73308 states and 250733 transitions. [2022-12-14 12:43:56,737 INFO L78 Accepts]: Start accepts. Automaton has 73308 states and 250733 transitions. Word has length 9 [2022-12-14 12:43:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:56,738 INFO L495 AbstractCegarLoop]: Abstraction has 73308 states and 250733 transitions. [2022-12-14 12:43:56,738 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) [2022-12-14 12:43:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 73308 states and 250733 transitions. [2022-12-14 12:43:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:43:56,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:56,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:56,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 12:43:56,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:43:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1857858580, now seen corresponding path program 1 times [2022-12-14 12:43:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:43:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299644759] [2022-12-14 12:43:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:43:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:56,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:43:56,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299644759] [2022-12-14 12:43:56,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299644759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:56,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:56,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:43:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125163664] [2022-12-14 12:43:56,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:56,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:43:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:43:56,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:43:56,787 INFO L87 Difference]: Start difference. First operand 73308 states and 250733 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:57,763 INFO L93 Difference]: Finished difference Result 106039 states and 347564 transitions. [2022-12-14 12:43:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:43:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:43:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:58,250 INFO L225 Difference]: With dead ends: 106039 [2022-12-14 12:43:58,251 INFO L226 Difference]: Without dead ends: 106039 [2022-12-14 12:43:58,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:43:58,251 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 216 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:58,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 70 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:43:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106039 states. [2022-12-14 12:44:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106039 to 90500. [2022-12-14 12:44:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90500 states, 89906 states have (on average 3.4415945543122817) internal successors, (309420), 90499 states have internal predecessors, (309420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90500 states to 90500 states and 309420 transitions. [2022-12-14 12:44:00,864 INFO L78 Accepts]: Start accepts. Automaton has 90500 states and 309420 transitions. Word has length 11 [2022-12-14 12:44:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:44:00,864 INFO L495 AbstractCegarLoop]: Abstraction has 90500 states and 309420 transitions. [2022-12-14 12:44:00,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 90500 states and 309420 transitions. [2022-12-14 12:44:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:44:00,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:44:00,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:44:00,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 12:44:00,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:44:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:44:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1857858554, now seen corresponding path program 1 times [2022-12-14 12:44:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:44:00,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235575252] [2022-12-14 12:44:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:44:00,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:44:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:44:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:44:00,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:44:00,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235575252] [2022-12-14 12:44:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235575252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:44:00,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:44:00,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:44:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108416516] [2022-12-14 12:44:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:44:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:44:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:44:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:44:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:44:00,920 INFO L87 Difference]: Start difference. First operand 90500 states and 309420 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:44:01,761 INFO L93 Difference]: Finished difference Result 106966 states and 343759 transitions. [2022-12-14 12:44:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:44:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:44:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:44:02,344 INFO L225 Difference]: With dead ends: 106966 [2022-12-14 12:44:02,345 INFO L226 Difference]: Without dead ends: 106822 [2022-12-14 12:44:02,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:44:02,345 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 208 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:44:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 89 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:44:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106822 states. [2022-12-14 12:44:04,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106822 to 89504. [2022-12-14 12:44:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89504 states, 88891 states have (on average 3.342048126356999) internal successors, (297078), 89503 states have internal predecessors, (297078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89504 states to 89504 states and 297078 transitions. [2022-12-14 12:44:04,812 INFO L78 Accepts]: Start accepts. Automaton has 89504 states and 297078 transitions. Word has length 11 [2022-12-14 12:44:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:44:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 89504 states and 297078 transitions. [2022-12-14 12:44:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 89504 states and 297078 transitions. [2022-12-14 12:44:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 12:44:04,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:44:04,814 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 12:44:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 12:44:04,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 12:44:04,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:44:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1811874633, now seen corresponding path program 1 times [2022-12-14 12:44:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:44:04,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104058167] [2022-12-14 12:44:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:44:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:44:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:44:04,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:44:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:44:04,834 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:44:04,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-14 12:44:04,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-14 12:44:04,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-14 12:44:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 12:44:04,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:44:04,837 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:44:04,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 12:44:04,853 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 12:44:04,854 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:44:04,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 241 transitions, 526 flow [2022-12-14 12:44:04,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 241 transitions, 526 flow [2022-12-14 12:44:04,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-12-14 12:44:04,922 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-12-14 12:44:04,922 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-14 12:44:04,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2556 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-12-14 12:44:04,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 32112 [2022-12-14 12:44:08,308 INFO L134 LiptonReduction]: Checked pairs total: 91005 [2022-12-14 12:44:08,308 INFO L136 LiptonReduction]: Total number of compositions: 208 [2022-12-14 12:44:08,309 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 112 transitions, 268 flow [2022-12-14 12:44:39,635 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:39,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:44:39,637 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;@3eac080e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:44:39,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-14 12:44:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:44:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:44:41,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:44:41,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:44:41,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-14 12:44:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:44:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1674200623, now seen corresponding path program 1 times [2022-12-14 12:44:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:44:41,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711460338] [2022-12-14 12:44:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:44:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:44:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:44:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:44:41,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:44:41,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711460338] [2022-12-14 12:44:41,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711460338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:44:41,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:44:41,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:44:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750433408] [2022-12-14 12:44:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:44:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:44:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:44:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:44:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:44:43,775 INFO L87 Difference]: Start difference. First operand has 1087085 states, 1081638 states have (on average 6.132270685756232) internal successors, (6632897), 1087084 states have internal predecessors, (6632897), 0 states have call successors, (0), 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) [2022-12-14 12:44:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:44:57,986 INFO L93 Difference]: Finished difference Result 1087049 states and 4931448 transitions. [2022-12-14 12:44:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:44:57,987 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 [2022-12-14 12:44:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:45:07,728 INFO L225 Difference]: With dead ends: 1087049 [2022-12-14 12:45:07,728 INFO L226 Difference]: Without dead ends: 1086423 [2022-12-14 12:45:07,728 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 [2022-12-14 12:45:07,729 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:45:07,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]