./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:59:27,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:59:27,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:59:27,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:59:27,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:59:27,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:59:27,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:59:27,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:59:27,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:59:27,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:59:27,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:59:27,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:59:27,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:59:27,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:59:27,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:59:27,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:59:27,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:59:27,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:59:27,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:59:27,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:59:27,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:59:27,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:59:27,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:59:27,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:59:27,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:59:27,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:59:27,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:59:27,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:59:27,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:59:27,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:59:27,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:59:27,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:59:27,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:59:27,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:59:27,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:59:27,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:59:27,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:59:27,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:59:27,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:59:27,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:59:27,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:59:27,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:59:27,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:59:27,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:59:27,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:59:27,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:59:27,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:59:27,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:59:27,412 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:59:27,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:59:27,412 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:59:27,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:59:27,413 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:59:27,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:59:27,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:59:27,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:59:27,414 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:59:27,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:59:27,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:59:27,415 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:59:27,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:59:27,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:59:27,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:59:27,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:59:27,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:59:27,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:59:27,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:59:27,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:59:27,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:59:27,418 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:59:27,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:59:27,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:59:27,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:59:27,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:59:27,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:59:27,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:59:27,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:59:27,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:59:27,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:59:27,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:59:27,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:59:27,427 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:59:27,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:59:27,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:59:27,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:59:27,428 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_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2022-11-26 00:59:27,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:59:27,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:59:27,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:59:27,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:59:27,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:59:27,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-26 00:59:30,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:59:31,080 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:59:31,081 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-26 00:59:31,092 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/data/5a74c0d00/c4a808cdd179441fba167fd3f702d0cb/FLAG938129f96 [2022-11-26 00:59:31,113 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/data/5a74c0d00/c4a808cdd179441fba167fd3f702d0cb [2022-11-26 00:59:31,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:59:31,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:59:31,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:59:31,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:59:31,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:59:31,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ab680c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31, skipping insertion in model container [2022-11-26 00:59:31,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:59:31,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:59:31,490 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_602796d3-1917-4938-b9f9-95e421b2414a/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-26 00:59:31,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:59:31,540 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:59:31,582 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_602796d3-1917-4938-b9f9-95e421b2414a/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-26 00:59:31,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:59:31,651 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:59:31,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31 WrapperNode [2022-11-26 00:59:31,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:59:31,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:59:31,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:59:31,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:59:31,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,695 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-26 00:59:31,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:59:31,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:59:31,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:59:31,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:59:31,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:59:31,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:59:31,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:59:31,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:59:31,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (1/1) ... [2022-11-26 00:59:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:59:31,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:59:31,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:59:31,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:59:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:59:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:59:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 00:59:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:59:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:59:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-26 00:59:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-26 00:59:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:59:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:59:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:59:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:59:31,812 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:59:31,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:59:31,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:59:32,289 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:59:32,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:59:32,297 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-26 00:59:32,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:59:32 BoogieIcfgContainer [2022-11-26 00:59:32,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:59:32,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:59:32,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:59:32,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:59:32,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:59:31" (1/3) ... [2022-11-26 00:59:32,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275476c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:59:32, skipping insertion in model container [2022-11-26 00:59:32,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:59:31" (2/3) ... [2022-11-26 00:59:32,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275476c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:59:32, skipping insertion in model container [2022-11-26 00:59:32,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:59:32" (3/3) ... [2022-11-26 00:59:32,317 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2022-11-26 00:59:32,327 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:59:32,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:59:32,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-26 00:59:32,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:59:32,423 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 00:59:32,459 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:59:32,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 129 transitions, 266 flow [2022-11-26 00:59:32,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 129 transitions, 266 flow [2022-11-26 00:59:32,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 266 flow [2022-11-26 00:59:32,560 INFO L130 PetriNetUnfolder]: 17/163 cut-off events. [2022-11-26 00:59:32,560 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 00:59:32,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 17/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2022-11-26 00:59:32,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 3520 [2022-11-26 00:59:37,190 INFO L134 LiptonReduction]: Checked pairs total: 6313 [2022-11-26 00:59:37,190 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-11-26 00:59:37,199 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 40 transitions, 88 flow [2022-11-26 00:59:37,228 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 203 states, 176 states have (on average 2.6931818181818183) internal successors, (474), 202 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:37,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:59:37,254 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;@4e0f8904, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:59:37,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-26 00:59:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 176 states have (on average 2.6931818181818183) internal successors, (474), 202 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:59:37,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:37,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:59:37,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-26 00:59:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 15441101, now seen corresponding path program 1 times [2022-11-26 00:59:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:37,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298696821] [2022-11-26 00:59:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:37,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298696821] [2022-11-26 00:59:37,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298696821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:37,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:37,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:59:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953539944] [2022-11-26 00:59:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:37,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:59:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:59:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:37,630 INFO L87 Difference]: Start difference. First operand has 203 states, 176 states have (on average 2.6931818181818183) internal successors, (474), 202 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:37,752 INFO L93 Difference]: Finished difference Result 168 states and 302 transitions. [2022-11-26 00:59:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:59:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:59:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:37,763 INFO L225 Difference]: With dead ends: 168 [2022-11-26 00:59:37,764 INFO L226 Difference]: Without dead ends: 162 [2022-11-26 00:59:37,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:37,768 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:37,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:59:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-26 00:59:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-26 00:59:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 147 states have (on average 1.9863945578231292) internal successors, (292), 161 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 292 transitions. [2022-11-26 00:59:37,809 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 292 transitions. Word has length 4 [2022-11-26 00:59:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:37,810 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 292 transitions. [2022-11-26 00:59:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 292 transitions. [2022-11-26 00:59:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:59:37,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:37,811 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 00:59:37,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:59:37,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-26 00:59:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1954028173, now seen corresponding path program 1 times [2022-11-26 00:59:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103405211] [2022-11-26 00:59:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:59:37,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:59:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:59:37,872 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:59:37,872 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:59:37,874 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-26 00:59:37,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-26 00:59:37,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-26 00:59:37,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-26 00:59:37,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-26 00:59:37,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-26 00:59:37,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-26 00:59:37,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-26 00:59:37,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-26 00:59:37,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-26 00:59:37,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-26 00:59:37,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-26 00:59:37,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-26 00:59:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:59:37,882 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:59:37,884 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:59:37,885 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 00:59:37,916 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 00:59:37,925 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:59:37,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 171 transitions, 360 flow [2022-11-26 00:59:37,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 171 transitions, 360 flow [2022-11-26 00:59:37,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 171 transitions, 360 flow [2022-11-26 00:59:38,038 INFO L130 PetriNetUnfolder]: 31/276 cut-off events. [2022-11-26 00:59:38,038 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-26 00:59:38,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 276 events. 31/276 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 836 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-26 00:59:38,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 11760 [2022-11-26 00:59:42,714 INFO L134 LiptonReduction]: Checked pairs total: 25031 [2022-11-26 00:59:42,714 INFO L136 LiptonReduction]: Total number of compositions: 154 [2022-11-26 00:59:42,715 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 65 transitions, 148 flow [2022-11-26 00:59:42,867 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3708 states, 3541 states have (on average 3.7376447331262357) internal successors, (13235), 3707 states have internal predecessors, (13235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:42,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:59:42,875 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;@4e0f8904, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:59:42,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-26 00:59:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 3708 states, 3541 states have (on average 3.7376447331262357) internal successors, (13235), 3707 states have internal predecessors, (13235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:59:42,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:42,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:59:42,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-26 00:59:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 828745691, now seen corresponding path program 1 times [2022-11-26 00:59:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238756493] [2022-11-26 00:59:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:42,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238756493] [2022-11-26 00:59:42,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238756493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:42,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:42,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:59:42,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015248634] [2022-11-26 00:59:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:42,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:59:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:59:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:42,986 INFO L87 Difference]: Start difference. First operand has 3708 states, 3541 states have (on average 3.7376447331262357) internal successors, (13235), 3707 states have internal predecessors, (13235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:43,131 INFO L93 Difference]: Finished difference Result 3673 states and 9989 transitions. [2022-11-26 00:59:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:59:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:59:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:43,163 INFO L225 Difference]: With dead ends: 3673 [2022-11-26 00:59:43,163 INFO L226 Difference]: Without dead ends: 3647 [2022-11-26 00:59:43,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:43,173 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:43,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:59:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2022-11-26 00:59:43,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3647. [2022-11-26 00:59:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3494 states have (on average 2.840011448196909) internal successors, (9923), 3646 states have internal predecessors, (9923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 9923 transitions. [2022-11-26 00:59:43,412 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 9923 transitions. Word has length 5 [2022-11-26 00:59:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:43,414 INFO L495 AbstractCegarLoop]: Abstraction has 3647 states and 9923 transitions. [2022-11-26 00:59:43,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 9923 transitions. [2022-11-26 00:59:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:59:43,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:43,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:59:43,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-26 00:59:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1861418071, now seen corresponding path program 1 times [2022-11-26 00:59:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:43,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902481652] [2022-11-26 00:59:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:43,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902481652] [2022-11-26 00:59:43,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902481652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:43,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:43,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:59:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116451134] [2022-11-26 00:59:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:59:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:59:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:59:43,592 INFO L87 Difference]: Start difference. First operand 3647 states and 9923 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:43,786 INFO L93 Difference]: Finished difference Result 3336 states and 9006 transitions. [2022-11-26 00:59:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:59:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:59:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:43,806 INFO L225 Difference]: With dead ends: 3336 [2022-11-26 00:59:43,806 INFO L226 Difference]: Without dead ends: 3336 [2022-11-26 00:59:43,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:59:43,807 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:43,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:59:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-11-26 00:59:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3333. [2022-11-26 00:59:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3200 states have (on average 2.8128125) internal successors, (9001), 3332 states have internal predecessors, (9001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 9001 transitions. [2022-11-26 00:59:43,925 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 9001 transitions. Word has length 7 [2022-11-26 00:59:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:43,926 INFO L495 AbstractCegarLoop]: Abstraction has 3333 states and 9001 transitions. [2022-11-26 00:59:43,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 9001 transitions. [2022-11-26 00:59:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:59:43,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:43,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:59:43,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:59:43,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-26 00:59:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash 937527991, now seen corresponding path program 1 times [2022-11-26 00:59:43,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:43,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822380013] [2022-11-26 00:59:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:44,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:44,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822380013] [2022-11-26 00:59:44,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822380013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:44,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:59:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309954292] [2022-11-26 00:59:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:59:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:59:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:44,052 INFO L87 Difference]: Start difference. First operand 3333 states and 9001 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:44,142 INFO L93 Difference]: Finished difference Result 3101 states and 8337 transitions. [2022-11-26 00:59:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:59:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:59:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:44,159 INFO L225 Difference]: With dead ends: 3101 [2022-11-26 00:59:44,159 INFO L226 Difference]: Without dead ends: 3101 [2022-11-26 00:59:44,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:44,161 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:44,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:59:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-11-26 00:59:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3101. [2022-11-26 00:59:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 2989 states have (on average 2.789227166276347) internal successors, (8337), 3100 states have internal predecessors, (8337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 8337 transitions. [2022-11-26 00:59:44,261 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 8337 transitions. Word has length 9 [2022-11-26 00:59:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:44,262 INFO L495 AbstractCegarLoop]: Abstraction has 3101 states and 8337 transitions. [2022-11-26 00:59:44,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 8337 transitions. [2022-11-26 00:59:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:59:44,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:44,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:59:44,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:59:44,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-26 00:59:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash 937528029, now seen corresponding path program 1 times [2022-11-26 00:59:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:44,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105446852] [2022-11-26 00:59:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:59:44,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:44,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105446852] [2022-11-26 00:59:44,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105446852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:44,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:44,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:59:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407431971] [2022-11-26 00:59:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:44,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:59:44,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:59:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:44,355 INFO L87 Difference]: Start difference. First operand 3101 states and 8337 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:44,477 INFO L93 Difference]: Finished difference Result 2869 states and 7673 transitions. [2022-11-26 00:59:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:59:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:59:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:44,492 INFO L225 Difference]: With dead ends: 2869 [2022-11-26 00:59:44,492 INFO L226 Difference]: Without dead ends: 2869 [2022-11-26 00:59:44,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:44,493 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:44,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 12 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:59:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2022-11-26 00:59:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2869. [2022-11-26 00:59:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2778 states have (on average 2.762059035277178) internal successors, (7673), 2868 states have internal predecessors, (7673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 7673 transitions. [2022-11-26 00:59:44,597 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 7673 transitions. Word has length 9 [2022-11-26 00:59:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:44,597 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 7673 transitions. [2022-11-26 00:59:44,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 7673 transitions. [2022-11-26 00:59:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:59:44,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:44,599 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:59:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:59:44,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-26 00:59:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash -978670003, now seen corresponding path program 1 times [2022-11-26 00:59:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:44,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992148955] [2022-11-26 00:59:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:44,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:59:44,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:59:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:59:44,629 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:59:44,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:59:44,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-26 00:59:44,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-26 00:59:44,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-26 00:59:44,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-26 00:59:44,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-26 00:59:44,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-26 00:59:44,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-26 00:59:44,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-26 00:59:44,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-26 00:59:44,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-26 00:59:44,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-26 00:59:44,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-26 00:59:44,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-26 00:59:44,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-26 00:59:44,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-26 00:59:44,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-26 00:59:44,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-26 00:59:44,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:59:44,634 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-26 00:59:44,634 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:59:44,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 00:59:44,658 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 00:59:44,661 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:59:44,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 213 transitions, 456 flow [2022-11-26 00:59:44,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 213 transitions, 456 flow [2022-11-26 00:59:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 213 transitions, 456 flow [2022-11-26 00:59:44,732 INFO L130 PetriNetUnfolder]: 50/430 cut-off events. [2022-11-26 00:59:44,733 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-26 00:59:44,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 50/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1496 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-26 00:59:44,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2022-11-26 00:59:50,058 INFO L134 LiptonReduction]: Checked pairs total: 53830 [2022-11-26 00:59:50,058 INFO L136 LiptonReduction]: Total number of compositions: 195 [2022-11-26 00:59:50,059 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 88 transitions, 206 flow [2022-11-26 00:59:52,984 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 61420 states, 60463 states have (on average 4.909432214742901) internal successors, (296839), 61419 states have internal predecessors, (296839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:52,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:59:52,993 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;@4e0f8904, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:59:52,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-26 00:59:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 61420 states, 60463 states have (on average 4.909432214742901) internal successors, (296839), 61419 states have internal predecessors, (296839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:59:53,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:53,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:59:53,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 00:59:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1257930539, now seen corresponding path program 1 times [2022-11-26 00:59:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:53,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244142730] [2022-11-26 00:59:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:53,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:53,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:53,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244142730] [2022-11-26 00:59:53,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244142730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:53,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:53,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:59:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382758899] [2022-11-26 00:59:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:59:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:59:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:53,278 INFO L87 Difference]: Start difference. First operand has 61420 states, 60463 states have (on average 4.909432214742901) internal successors, (296839), 61419 states have internal predecessors, (296839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:54,498 INFO L93 Difference]: Finished difference Result 61385 states and 222191 transitions. [2022-11-26 00:59:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:59:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:59:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:55,274 INFO L225 Difference]: With dead ends: 61385 [2022-11-26 00:59:55,275 INFO L226 Difference]: Without dead ends: 61259 [2022-11-26 00:59:55,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:59:55,278 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:55,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:59:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61259 states. [2022-11-26 00:59:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61259 to 61259. [2022-11-26 00:59:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61259 states, 60320 states have (on average 3.6764754641909816) internal successors, (221765), 61258 states have internal predecessors, (221765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61259 states to 61259 states and 221765 transitions. [2022-11-26 00:59:58,745 INFO L78 Accepts]: Start accepts. Automaton has 61259 states and 221765 transitions. Word has length 5 [2022-11-26 00:59:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:58,746 INFO L495 AbstractCegarLoop]: Abstraction has 61259 states and 221765 transitions. [2022-11-26 00:59:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 61259 states and 221765 transitions. [2022-11-26 00:59:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:59:58,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:58,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:59:58,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 00:59:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1993948505, now seen corresponding path program 1 times [2022-11-26 00:59:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:58,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431998686] [2022-11-26 00:59:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:58,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:58,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431998686] [2022-11-26 00:59:58,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431998686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:58,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:58,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:59:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590608225] [2022-11-26 00:59:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:59:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:59:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:59:58,880 INFO L87 Difference]: Start difference. First operand 61259 states and 221765 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:59,565 INFO L93 Difference]: Finished difference Result 58285 states and 210170 transitions. [2022-11-26 00:59:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:59:59,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:59:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:00,589 INFO L225 Difference]: With dead ends: 58285 [2022-11-26 01:00:00,590 INFO L226 Difference]: Without dead ends: 58285 [2022-11-26 01:00:00,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:00:00,592 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:00,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 17 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:00:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58285 states. [2022-11-26 01:00:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58285 to 58279. [2022-11-26 01:00:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58279 states, 57388 states have (on average 3.662037359726772) internal successors, (210157), 58278 states have internal predecessors, (210157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58279 states to 58279 states and 210157 transitions. [2022-11-26 01:00:02,939 INFO L78 Accepts]: Start accepts. Automaton has 58279 states and 210157 transitions. Word has length 7 [2022-11-26 01:00:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:02,939 INFO L495 AbstractCegarLoop]: Abstraction has 58279 states and 210157 transitions. [2022-11-26 01:00:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 58279 states and 210157 transitions. [2022-11-26 01:00:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:00:02,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:02,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 01:00:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 01:00:02,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:02,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1079133039, now seen corresponding path program 1 times [2022-11-26 01:00:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226570639] [2022-11-26 01:00:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:02,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:00:02,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:02,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226570639] [2022-11-26 01:00:02,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226570639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:02,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:02,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:00:02,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677721116] [2022-11-26 01:00:02,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:02,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:00:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:00:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:02,976 INFO L87 Difference]: Start difference. First operand 58279 states and 210157 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:03,395 INFO L93 Difference]: Finished difference Result 54169 states and 194749 transitions. [2022-11-26 01:00:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:00:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 01:00:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:04,203 INFO L225 Difference]: With dead ends: 54169 [2022-11-26 01:00:04,203 INFO L226 Difference]: Without dead ends: 54169 [2022-11-26 01:00:04,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:04,204 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 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 [2022-11-26 01:00:04,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:00:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54169 states. [2022-11-26 01:00:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54169 to 54169. [2022-11-26 01:00:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54169 states, 53416 states have (on average 3.645892616444511) internal successors, (194749), 54168 states have internal predecessors, (194749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54169 states to 54169 states and 194749 transitions. [2022-11-26 01:00:06,414 INFO L78 Accepts]: Start accepts. Automaton has 54169 states and 194749 transitions. Word has length 9 [2022-11-26 01:00:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 54169 states and 194749 transitions. [2022-11-26 01:00:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 54169 states and 194749 transitions. [2022-11-26 01:00:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:00:06,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:06,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 01:00:06,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 01:00:06,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1079132996, now seen corresponding path program 1 times [2022-11-26 01:00:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998735304] [2022-11-26 01:00:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:06,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998735304] [2022-11-26 01:00:06,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998735304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:06,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:06,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:00:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403480514] [2022-11-26 01:00:06,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:06,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:00:06,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:00:06,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:06,453 INFO L87 Difference]: Start difference. First operand 54169 states and 194749 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:06,810 INFO L93 Difference]: Finished difference Result 50059 states and 179341 transitions. [2022-11-26 01:00:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:00:06,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 01:00:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:07,043 INFO L225 Difference]: With dead ends: 50059 [2022-11-26 01:00:07,044 INFO L226 Difference]: Without dead ends: 50059 [2022-11-26 01:00:07,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:07,044 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:07,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 8 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:00:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50059 states. [2022-11-26 01:00:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50059 to 50059. [2022-11-26 01:00:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50059 states, 49444 states have (on average 3.6271539519456355) internal successors, (179341), 50058 states have internal predecessors, (179341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50059 states to 50059 states and 179341 transitions. [2022-11-26 01:00:09,196 INFO L78 Accepts]: Start accepts. Automaton has 50059 states and 179341 transitions. Word has length 9 [2022-11-26 01:00:09,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:09,196 INFO L495 AbstractCegarLoop]: Abstraction has 50059 states and 179341 transitions. [2022-11-26 01:00:09,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:09,197 INFO L276 IsEmpty]: Start isEmpty. Operand 50059 states and 179341 transitions. [2022-11-26 01:00:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:00:09,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:09,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:09,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 01:00:09,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1050285885, now seen corresponding path program 1 times [2022-11-26 01:00:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:09,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431461584] [2022-11-26 01:00:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:09,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431461584] [2022-11-26 01:00:09,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431461584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:09,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:09,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:00:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928103914] [2022-11-26 01:00:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:09,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 01:00:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 01:00:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 01:00:09,355 INFO L87 Difference]: Start difference. First operand 50059 states and 179341 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:10,880 INFO L93 Difference]: Finished difference Result 78403 states and 269598 transitions. [2022-11-26 01:00:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 01:00:10,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-11-26 01:00:10,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:11,362 INFO L225 Difference]: With dead ends: 78403 [2022-11-26 01:00:11,363 INFO L226 Difference]: Without dead ends: 78403 [2022-11-26 01:00:11,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:11,363 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 196 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:11,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 70 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 01:00:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78403 states. [2022-11-26 01:00:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78403 to 70041. [2022-11-26 01:00:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70041 states, 69426 states have (on average 3.5745109901189758) internal successors, (248164), 70040 states have internal predecessors, (248164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70041 states to 70041 states and 248164 transitions. [2022-11-26 01:00:13,753 INFO L78 Accepts]: Start accepts. Automaton has 70041 states and 248164 transitions. Word has length 11 [2022-11-26 01:00:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:13,753 INFO L495 AbstractCegarLoop]: Abstraction has 70041 states and 248164 transitions. [2022-11-26 01:00:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 70041 states and 248164 transitions. [2022-11-26 01:00:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:00:13,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:13,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 01:00:13,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1050285859, now seen corresponding path program 1 times [2022-11-26 01:00:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:13,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009158224] [2022-11-26 01:00:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:13,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:13,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009158224] [2022-11-26 01:00:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009158224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:13,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:13,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:00:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735463247] [2022-11-26 01:00:13,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:00:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:00:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:13,832 INFO L87 Difference]: Start difference. First operand 70041 states and 248164 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:15,253 INFO L93 Difference]: Finished difference Result 91305 states and 309629 transitions. [2022-11-26 01:00:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:00:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 01:00:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:15,587 INFO L225 Difference]: With dead ends: 91305 [2022-11-26 01:00:15,587 INFO L226 Difference]: Without dead ends: 91221 [2022-11-26 01:00:15,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:00:15,588 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:15,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 21 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:00:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91221 states. [2022-11-26 01:00:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91221 to 79242. [2022-11-26 01:00:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79242 states, 78665 states have (on average 3.508281955126168) internal successors, (275979), 79241 states have internal predecessors, (275979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79242 states to 79242 states and 275979 transitions. [2022-11-26 01:00:18,620 INFO L78 Accepts]: Start accepts. Automaton has 79242 states and 275979 transitions. Word has length 11 [2022-11-26 01:00:18,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:18,620 INFO L495 AbstractCegarLoop]: Abstraction has 79242 states and 275979 transitions. [2022-11-26 01:00:18,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:18,621 INFO L276 IsEmpty]: Start isEmpty. Operand 79242 states and 275979 transitions. [2022-11-26 01:00:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 01:00:18,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:18,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:18,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 01:00:18,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash -426479848, now seen corresponding path program 1 times [2022-11-26 01:00:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:18,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650457972] [2022-11-26 01:00:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:18,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650457972] [2022-11-26 01:00:18,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650457972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619602598] [2022-11-26 01:00:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:18,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:18,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:00:18,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:00:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:19,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 01:00:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:19,252 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 01:00:19,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 01:00:19,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 01:00:19,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-26 01:00:19,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 01:00:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:19,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:00:19,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619602598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:19,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:00:19,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-11-26 01:00:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430454844] [2022-11-26 01:00:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:19,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 01:00:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:19,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 01:00:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:00:19,517 INFO L87 Difference]: Start difference. First operand 79242 states and 275979 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:20,542 INFO L93 Difference]: Finished difference Result 77755 states and 270573 transitions. [2022-11-26 01:00:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:00:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-26 01:00:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:21,762 INFO L225 Difference]: With dead ends: 77755 [2022-11-26 01:00:21,762 INFO L226 Difference]: Without dead ends: 77755 [2022-11-26 01:00:21,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:00:21,763 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 55 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:00:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77755 states. [2022-11-26 01:00:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77755 to 76636. [2022-11-26 01:00:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76636 states, 76080 states have (on average 3.5069006309148265) internal successors, (266805), 76635 states have internal predecessors, (266805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76636 states to 76636 states and 266805 transitions. [2022-11-26 01:00:23,915 INFO L78 Accepts]: Start accepts. Automaton has 76636 states and 266805 transitions. Word has length 14 [2022-11-26 01:00:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:23,916 INFO L495 AbstractCegarLoop]: Abstraction has 76636 states and 266805 transitions. [2022-11-26 01:00:23,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 76636 states and 266805 transitions. [2022-11-26 01:00:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 01:00:23,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:23,917 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:23,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:00:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-26 01:00:24,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -426479822, now seen corresponding path program 1 times [2022-11-26 01:00:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:24,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172262704] [2022-11-26 01:00:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:24,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172262704] [2022-11-26 01:00:24,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172262704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103823439] [2022-11-26 01:00:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:24,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:00:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:00:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-26 01:00:24,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:24,447 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 01:00:24,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 01:00:24,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:00:24,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 01:00:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:24,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:00:24,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103823439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:24,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:00:24,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-26 01:00:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342448163] [2022-11-26 01:00:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:24,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:00:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:00:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:24,566 INFO L87 Difference]: Start difference. First operand 76636 states and 266805 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:26,218 INFO L93 Difference]: Finished difference Result 80391 states and 276121 transitions. [2022-11-26 01:00:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:00:26,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-26 01:00:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:26,562 INFO L225 Difference]: With dead ends: 80391 [2022-11-26 01:00:26,562 INFO L226 Difference]: Without dead ends: 80391 [2022-11-26 01:00:26,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:26,563 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 136 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:26,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 30 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:00:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80391 states. [2022-11-26 01:00:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80391 to 63144. [2022-11-26 01:00:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63144 states, 62694 states have (on average 3.5081347497368167) internal successors, (219939), 63143 states have internal predecessors, (219939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63144 states to 63144 states and 219939 transitions. [2022-11-26 01:00:28,883 INFO L78 Accepts]: Start accepts. Automaton has 63144 states and 219939 transitions. Word has length 14 [2022-11-26 01:00:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:28,884 INFO L495 AbstractCegarLoop]: Abstraction has 63144 states and 219939 transitions. [2022-11-26 01:00:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 63144 states and 219939 transitions. [2022-11-26 01:00:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 01:00:28,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:28,886 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 01:00:28,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 01:00:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_602796d3-1917-4938-b9f9-95e421b2414a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:29,092 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 01:00:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:29,093 INFO L85 PathProgramCache]: Analyzing trace with hash 528112224, now seen corresponding path program 1 times [2022-11-26 01:00:29,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:29,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950856173] [2022-11-26 01:00:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:00:29,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:00:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:00:29,153 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:00:29,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:00:29,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-26 01:00:29,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-26 01:00:29,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-26 01:00:29,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-26 01:00:29,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-26 01:00:29,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-26 01:00:29,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-26 01:00:29,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-26 01:00:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-26 01:00:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-26 01:00:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-26 01:00:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-26 01:00:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-26 01:00:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-26 01:00:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-26 01:00:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-26 01:00:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-26 01:00:29,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-26 01:00:29,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-26 01:00:29,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-26 01:00:29,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-26 01:00:29,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 01:00:29,160 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:29,160 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:00:29,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-26 01:00:29,199 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-26 01:00:29,204 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:00:29,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 255 transitions, 554 flow [2022-11-26 01:00:29,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 255 transitions, 554 flow [2022-11-26 01:00:29,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 255 transitions, 554 flow [2022-11-26 01:00:29,367 INFO L130 PetriNetUnfolder]: 81/668 cut-off events. [2022-11-26 01:00:29,367 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-26 01:00:29,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 668 events. 81/668 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2685 event pairs, 6 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 450. Up to 32 conditions per place. [2022-11-26 01:00:29,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 37280 [2022-11-26 01:00:35,966 INFO L134 LiptonReduction]: Checked pairs total: 85512 [2022-11-26 01:00:35,966 INFO L136 LiptonReduction]: Total number of compositions: 229 [2022-11-26 01:00:35,967 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 111 transitions, 266 flow